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Finding the Fourth Proportional to 424,377.59, 636,170.90 and 291,320.51

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Solution

The fourth proportional to 424,377.59, 636,170.90 and 291,320.51 is: 436,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,377.59 : 636,170.90 = 291,320.51 : x
  2. Step 2: Convert to fraction form
    424,377.59/636,170.90 = 291,320.51/x
  3. Step 3: Cross multiply
    424,377.59x = 636,170.90 × 291,320.51
  4. Step 4: Simplify right side
    424,377.59x = 185,329,626,397.70
  5. Step 5: Solve for x
    x = 185,329,626,397.70/424,377.59
  6. Step 6: Final answer
    x = 436,709.27

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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.