Home / 687,528.64-1,031,320.86-327,514.36

Finding the Fourth Proportional to 687,528.64, 1,031,320.86 and 327,514.36

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Solution

The fourth proportional to 687,528.64, 1,031,320.86 and 327,514.36 is: 491,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,528.64 : 1,031,320.86 = 327,514.36 : x
  2. Step 2: Convert to fraction form
    687,528.64/1,031,320.86 = 327,514.36/x
  3. Step 3: Cross multiply
    687,528.64x = 1,031,320.86 × 327,514.36
  4. Step 4: Simplify right side
    687,528.64x = 337,772,391,417.55
  5. Step 5: Solve for x
    x = 337,772,391,417.55/687,528.64
  6. Step 6: Final answer
    x = 491,284.83

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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.