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Finding the Fourth Proportional to 424,377.84, 636,171.27 and 291,320.76

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Solution

The fourth proportional to 424,377.84, 636,171.27 and 291,320.76 is: 436,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,377.84 : 636,171.27 = 291,320.76 : x
  2. Step 2: Convert to fraction form
    424,377.84/636,171.27 = 291,320.76/x
  3. Step 3: Cross multiply
    424,377.84x = 636,171.27 × 291,320.76
  4. Step 4: Simplify right side
    424,377.84x = 185,329,897,866.57
  5. Step 5: Solve for x
    x = 185,329,897,866.57/424,377.84
  6. Step 6: Final answer
    x = 436,709.65

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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.