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Finding the Fourth Proportional to 670,137.43, 924,924.17 and 398,152.97

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Solution

The fourth proportional to 670,137.43, 924,924.17 and 398,152.97 is: 549,531.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,137.43 : 924,924.17 = 398,152.97 : x
  2. Step 2: Convert to fraction form
    670,137.43/924,924.17 = 398,152.97/x
  3. Step 3: Cross multiply
    670,137.43x = 924,924.17 × 398,152.97
  4. Step 4: Simplify right side
    670,137.43x = 368,261,298,694.90
  5. Step 5: Solve for x
    x = 368,261,298,694.90/670,137.43
  6. Step 6: Final answer
    x = 549,531.01

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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.