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Finding the Fourth Proportional to 577,091.80, 865,637.70 and 437,123.80

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Solution

The fourth proportional to 577,091.80, 865,637.70 and 437,123.80 is: 655,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,091.80 : 865,637.70 = 437,123.80 : x
  2. Step 2: Convert to fraction form
    577,091.80/865,637.70 = 437,123.80/x
  3. Step 3: Cross multiply
    577,091.80x = 865,637.70 × 437,123.80
  4. Step 4: Simplify right side
    577,091.80x = 378,390,840,847.26
  5. Step 5: Solve for x
    x = 378,390,840,847.26/577,091.80
  6. Step 6: Final answer
    x = 655,685.70

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Similar ratio
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1.5x scale

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.