Home / 687,753.40-1,031,630.10-501,129.40

Finding the Fourth Proportional to 687,753.40, 1,031,630.10 and 501,129.40

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Solution

The fourth proportional to 687,753.40, 1,031,630.10 and 501,129.40 is: 751,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,753.40 : 1,031,630.10 = 501,129.40 : x
  2. Step 2: Convert to fraction form
    687,753.40/1,031,630.10 = 501,129.40/x
  3. Step 3: Cross multiply
    687,753.40x = 1,031,630.10 × 501,129.40
  4. Step 4: Simplify right side
    687,753.40x = 516,980,173,034.94
  5. Step 5: Solve for x
    x = 516,980,173,034.94/687,753.40
  6. Step 6: Final answer
    x = 751,694.10

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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.