Home / 1,246,334,987.70-1,869,502,481.55-519,229,221.30

Finding the Fourth Proportional to 1,246,334,987.70, 1,869,502,481.55 and 519,229,221.30

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Solution

The fourth proportional to 1,246,334,987.70, 1,869,502,481.55 and 519,229,221.30 is: 778,843,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,334,987.70 : 1,869,502,481.55 = 519,229,221.30 : x
  2. Step 2: Convert to fraction form
    1,246,334,987.70/1,869,502,481.55 = 519,229,221.30/x
  3. Step 3: Cross multiply
    1,246,334,987.70x = 1,869,502,481.55 × 519,229,221.30
  4. Step 4: Simplify right side
    1,246,334,987.70x = 970,700,317,713,624,064
  5. Step 5: Solve for x
    x = 970,700,317,713,624,064/1,246,334,987.70
  6. Step 6: Final answer
    x = 778,843,831.95

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Half scale
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Double scale
Find fourth proportional to 1,246,334,988.70, 1,869,502,483.05 and 519,229,222.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.