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Finding the Fourth Proportional to 602,712.28, 901,909.80 and 521,939.08

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Solution

The fourth proportional to 602,712.28, 901,909.80 and 521,939.08 is: 781,039.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,712.28 : 901,909.80 = 521,939.08 : x
  2. Step 2: Convert to fraction form
    602,712.28/901,909.80 = 521,939.08/x
  3. Step 3: Cross multiply
    602,712.28x = 901,909.80 × 521,939.08
  4. Step 4: Simplify right side
    602,712.28x = 470,741,971,254.98
  5. Step 5: Solve for x
    x = 470,741,971,254.98/602,712.28
  6. Step 6: Final answer
    x = 781,039.29

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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.