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Finding the Fourth Proportional to 680,841.72, 939,543.24 and 379,035.72

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Solution

The fourth proportional to 680,841.72, 939,543.24 and 379,035.72 is: 523,059.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,841.72 : 939,543.24 = 379,035.72 : x
  2. Step 2: Convert to fraction form
    680,841.72/939,543.24 = 379,035.72/x
  3. Step 3: Cross multiply
    680,841.72x = 939,543.24 × 379,035.72
  4. Step 4: Simplify right side
    680,841.72x = 356,120,448,444.53
  5. Step 5: Solve for x
    x = 356,120,448,444.53/680,841.72
  6. Step 6: Final answer
    x = 523,059.09

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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.