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Finding the Fourth Proportional to 536,921.59, 740,907.69 and 316,123.78

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Solution

The fourth proportional to 536,921.59, 740,907.69 and 316,123.78 is: 436,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,921.59 : 740,907.69 = 316,123.78 : x
  2. Step 2: Convert to fraction form
    536,921.59/740,907.69 = 316,123.78/x
  3. Step 3: Cross multiply
    536,921.59x = 740,907.69 × 316,123.78
  4. Step 4: Simplify right side
    536,921.59x = 234,218,539,593.87
  5. Step 5: Solve for x
    x = 234,218,539,593.87/536,921.59
  6. Step 6: Final answer
    x = 436,224.85

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1.5x scale

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.