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Finding the Fourth Proportional to 424,376.84, 636,169.77 and 291,319.76

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Solution

The fourth proportional to 424,376.84, 636,169.77 and 291,319.76 is: 436,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,376.84 : 636,169.77 = 291,319.76 : x
  2. Step 2: Convert to fraction form
    424,376.84/636,169.77 = 291,319.76/x
  3. Step 3: Cross multiply
    424,376.84x = 636,169.77 × 291,319.76
  4. Step 4: Simplify right side
    424,376.84x = 185,328,821,534.81
  5. Step 5: Solve for x
    x = 185,328,821,534.81/424,376.84
  6. Step 6: Final answer
    x = 436,708.15

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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.