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Finding the Fourth Proportional to 478,802.29, 716,085.92 and 425,865.95

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Solution

The fourth proportional to 478,802.29, 716,085.92 and 425,865.95 is: 636,915.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,802.29 : 716,085.92 = 425,865.95 : x
  2. Step 2: Convert to fraction form
    478,802.29/716,085.92 = 425,865.95/x
  3. Step 3: Cross multiply
    478,802.29x = 716,085.92 × 425,865.95
  4. Step 4: Simplify right side
    478,802.29x = 304,956,612,404.47
  5. Step 5: Solve for x
    x = 304,956,612,404.47/478,802.29
  6. Step 6: Final answer
    x = 636,915.53

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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.