Home / 813,153.78-1,122,135.48-450,574.47

Finding the Fourth Proportional to 813,153.78, 1,122,135.48 and 450,574.47

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Solution

The fourth proportional to 813,153.78, 1,122,135.48 and 450,574.47 is: 621,783.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,153.78 : 1,122,135.48 = 450,574.47 : x
  2. Step 2: Convert to fraction form
    813,153.78/1,122,135.48 = 450,574.47/x
  3. Step 3: Cross multiply
    813,153.78x = 1,122,135.48 × 450,574.47
  4. Step 4: Simplify right side
    813,153.78x = 505,605,599,169.20
  5. Step 5: Solve for x
    x = 505,605,599,169.20/813,153.78
  6. Step 6: Final answer
    x = 621,783.49

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.