Home / 578,318.10-867,477.15-478,785.30

Finding the Fourth Proportional to 578,318.10, 867,477.15 and 478,785.30

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Solution

The fourth proportional to 578,318.10, 867,477.15 and 478,785.30 is: 718,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,318.10 : 867,477.15 = 478,785.30 : x
  2. Step 2: Convert to fraction form
    578,318.10/867,477.15 = 478,785.30/x
  3. Step 3: Cross multiply
    578,318.10x = 867,477.15 × 478,785.30
  4. Step 4: Simplify right side
    578,318.10x = 415,335,307,505.90
  5. Step 5: Solve for x
    x = 415,335,307,505.90/578,318.10
  6. Step 6: Final answer
    x = 718,177.95

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Double scale
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Similar ratio
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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.