Home / 630,614.92-868,769.94-439,282.12

Finding the Fourth Proportional to 630,614.92, 868,769.94 and 439,282.12

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Solution

The fourth proportional to 630,614.92, 868,769.94 and 439,282.12 is: 605,179.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,614.92 : 868,769.94 = 439,282.12 : x
  2. Step 2: Convert to fraction form
    630,614.92/868,769.94 = 439,282.12/x
  3. Step 3: Cross multiply
    630,614.92x = 868,769.94 × 439,282.12
  4. Step 4: Simplify right side
    630,614.92x = 381,635,101,035.47
  5. Step 5: Solve for x
    x = 381,635,101,035.47/630,614.92
  6. Step 6: Final answer
    x = 605,179.31

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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.