Home / 787,117.20-1,180,675.80-472,189.20

Finding the Fourth Proportional to 787,117.20, 1,180,675.80 and 472,189.20

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Solution

The fourth proportional to 787,117.20, 1,180,675.80 and 472,189.20 is: 708,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,117.20 : 1,180,675.80 = 472,189.20 : x
  2. Step 2: Convert to fraction form
    787,117.20/1,180,675.80 = 472,189.20/x
  3. Step 3: Cross multiply
    787,117.20x = 1,180,675.80 × 472,189.20
  4. Step 4: Simplify right side
    787,117.20x = 557,502,361,461.36
  5. Step 5: Solve for x
    x = 557,502,361,461.36/787,117.20
  6. Step 6: Final answer
    x = 708,283.80

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Double scale
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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.