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Finding the Fourth Proportional to 547,099.62, 755,123.13 and 355,779.78

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Solution

The fourth proportional to 547,099.62, 755,123.13 and 355,779.78 is: 491,057.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,099.62 : 755,123.13 = 355,779.78 : x
  2. Step 2: Convert to fraction form
    547,099.62/755,123.13 = 355,779.78/x
  3. Step 3: Cross multiply
    547,099.62x = 755,123.13 × 355,779.78
  4. Step 4: Simplify right side
    547,099.62x = 268,657,541,064.31
  5. Step 5: Solve for x
    x = 268,657,541,064.31/547,099.62
  6. Step 6: Final answer
    x = 491,057.81

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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.