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Finding the Fourth Proportional to 391,177.49, 539,294.91 and 334,426.46

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Solution

The fourth proportional to 391,177.49, 539,294.91 and 334,426.46 is: 461,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,177.49 : 539,294.91 = 334,426.46 : x
  2. Step 2: Convert to fraction form
    391,177.49/539,294.91 = 334,426.46/x
  3. Step 3: Cross multiply
    391,177.49x = 539,294.91 × 334,426.46
  4. Step 4: Simplify right side
    391,177.49x = 180,354,485,577.89
  5. Step 5: Solve for x
    x = 180,354,485,577.89/391,177.49
  6. Step 6: Final answer
    x = 461,055.38

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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.