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Finding the Fourth Proportional to 676,381.41, 933,387.91 and 385,987.70

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Solution

The fourth proportional to 676,381.41, 933,387.91 and 385,987.70 is: 532,652.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,381.41 : 933,387.91 = 385,987.70 : x
  2. Step 2: Convert to fraction form
    676,381.41/933,387.91 = 385,987.70/x
  3. Step 3: Cross multiply
    676,381.41x = 933,387.91 × 385,987.70
  4. Step 4: Simplify right side
    676,381.41x = 360,276,253,957.21
  5. Step 5: Solve for x
    x = 360,276,253,957.21/676,381.41
  6. Step 6: Final answer
    x = 532,652.51

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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.