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Finding the Fourth Proportional to 630,691.24, 870,356.52 and 344,217.40

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Solution

The fourth proportional to 630,691.24, 870,356.52 and 344,217.40 is: 475,021.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,691.24 : 870,356.52 = 344,217.40 : x
  2. Step 2: Convert to fraction form
    630,691.24/870,356.52 = 344,217.40/x
  3. Step 3: Cross multiply
    630,691.24x = 870,356.52 × 344,217.40
  4. Step 4: Simplify right side
    630,691.24x = 299,591,858,387.45
  5. Step 5: Solve for x
    x = 299,591,858,387.45/630,691.24
  6. Step 6: Final answer
    x = 475,021.44

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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.