Home / 520,918.35-781,377.53-436,937.55

Finding the Fourth Proportional to 520,918.35, 781,377.53 and 436,937.55

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Solution

The fourth proportional to 520,918.35, 781,377.53 and 436,937.55 is: 655,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,918.35 : 781,377.53 = 436,937.55 : x
  2. Step 2: Convert to fraction form
    520,918.35/781,377.53 = 436,937.55/x
  3. Step 3: Cross multiply
    520,918.35x = 781,377.53 × 436,937.55
  4. Step 4: Simplify right side
    520,918.35x = 341,413,181,398.56
  5. Step 5: Solve for x
    x = 341,413,181,398.56/520,918.35
  6. Step 6: Final answer
    x = 655,406.33

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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.