Home / 687,617.28-1,031,637.15-328,246.74

Finding the Fourth Proportional to 687,617.28, 1,031,637.15 and 328,246.74

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Solution

The fourth proportional to 687,617.28, 1,031,637.15 and 328,246.74 is: 492,470.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,617.28 : 1,031,637.15 = 328,246.74 : x
  2. Step 2: Convert to fraction form
    687,617.28/1,031,637.15 = 328,246.74/x
  3. Step 3: Cross multiply
    687,617.28x = 1,031,637.15 × 328,246.74
  4. Step 4: Simplify right side
    687,617.28x = 338,631,531,350.39
  5. Step 5: Solve for x
    x = 338,631,531,350.39/687,617.28
  6. Step 6: Final answer
    x = 492,470.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.