Home / 687,322.31-1,031,077.17-399,269.30

Finding the Fourth Proportional to 687,322.31, 1,031,077.17 and 399,269.30

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Solution

The fourth proportional to 687,322.31, 1,031,077.17 and 399,269.30 is: 598,958.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,322.31 : 1,031,077.17 = 399,269.30 : x
  2. Step 2: Convert to fraction form
    687,322.31/1,031,077.17 = 399,269.30/x
  3. Step 3: Cross multiply
    687,322.31x = 1,031,077.17 × 399,269.30
  4. Step 4: Simplify right side
    687,322.31x = 411,677,454,756.50
  5. Step 5: Solve for x
    x = 411,677,454,756.50/687,322.31
  6. Step 6: Final answer
    x = 598,958.38

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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.