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Finding the Fourth Proportional to 423,940.96, 635,320.76 and 318,637.12

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Solution

The fourth proportional to 423,940.96, 635,320.76 and 318,637.12 is: 477,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,940.96 : 635,320.76 = 318,637.12 : x
  2. Step 2: Convert to fraction form
    423,940.96/635,320.76 = 318,637.12/x
  3. Step 3: Cross multiply
    423,940.96x = 635,320.76 × 318,637.12
  4. Step 4: Simplify right side
    423,940.96x = 202,436,777,242.61
  5. Step 5: Solve for x
    x = 202,436,777,242.61/423,940.96
  6. Step 6: Final answer
    x = 477,511.72

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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.