Home / 861,489.65-1,188,924.41-498,919.88

Finding the Fourth Proportional to 861,489.65, 1,188,924.41 and 498,919.88

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Solution

The fourth proportional to 861,489.65, 1,188,924.41 and 498,919.88 is: 688,549.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,489.65 : 1,188,924.41 = 498,919.88 : x
  2. Step 2: Convert to fraction form
    861,489.65/1,188,924.41 = 498,919.88/x
  3. Step 3: Cross multiply
    861,489.65x = 1,188,924.41 × 498,919.88
  4. Step 4: Simplify right side
    861,489.65x = 593,178,023,966.27
  5. Step 5: Solve for x
    x = 593,178,023,966.27/861,489.65
  6. Step 6: Final answer
    x = 688,549.22

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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.