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Finding the Fourth Proportional to 609,331.31, 840,972.12 and 347,687.13

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Solution

The fourth proportional to 609,331.31, 840,972.12 and 347,687.13 is: 479,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,331.31 : 840,972.12 = 347,687.13 : x
  2. Step 2: Convert to fraction form
    609,331.31/840,972.12 = 347,687.13/x
  3. Step 3: Cross multiply
    609,331.31x = 840,972.12 × 347,687.13
  4. Step 4: Simplify right side
    609,331.31x = 292,395,186,618.37
  5. Step 5: Solve for x
    x = 292,395,186,618.37/609,331.31
  6. Step 6: Final answer
    x = 479,862.40

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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.