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Finding the Fourth Proportional to 478,800.72, 716,083.47 and 425,864.12

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Solution

The fourth proportional to 478,800.72, 716,083.47 and 425,864.12 is: 636,912.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,800.72 : 716,083.47 = 425,864.12 : x
  2. Step 2: Convert to fraction form
    478,800.72/716,083.47 = 425,864.12/x
  3. Step 3: Cross multiply
    478,800.72x = 716,083.47 × 425,864.12
  4. Step 4: Simplify right side
    478,800.72x = 304,954,253,217.68
  5. Step 5: Solve for x
    x = 304,954,253,217.68/478,800.72
  6. Step 6: Final answer
    x = 636,912.69

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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.