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Finding the Fourth Proportional to 536,920.59, 740,906.31 and 316,122.78

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Solution

The fourth proportional to 536,920.59, 740,906.31 and 316,122.78 is: 436,223.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,920.59 : 740,906.31 = 316,122.78 : x
  2. Step 2: Convert to fraction form
    536,920.59/740,906.31 = 316,122.78/x
  3. Step 3: Cross multiply
    536,920.59x = 740,906.31 × 316,122.78
  4. Step 4: Simplify right side
    536,920.59x = 234,217,362,436.74
  5. Step 5: Solve for x
    x = 234,217,362,436.74/536,920.59
  6. Step 6: Final answer
    x = 436,223.47

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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.