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Finding the Fourth Proportional to 638,169.36, 880,673.92 and 347,781.04

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Solution

The fourth proportional to 638,169.36, 880,673.92 and 347,781.04 is: 479,937.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,169.36 : 880,673.92 = 347,781.04 : x
  2. Step 2: Convert to fraction form
    638,169.36/880,673.92 = 347,781.04/x
  3. Step 3: Cross multiply
    638,169.36x = 880,673.92 × 347,781.04
  4. Step 4: Simplify right side
    638,169.36x = 306,281,691,798.48
  5. Step 5: Solve for x
    x = 306,281,691,798.48/638,169.36
  6. Step 6: Final answer
    x = 479,937.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.