Home / 687,509.61-1,031,292.38-327,495.39

Finding the Fourth Proportional to 687,509.61, 1,031,292.38 and 327,495.39

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Solution

The fourth proportional to 687,509.61, 1,031,292.38 and 327,495.39 is: 491,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,509.61 : 1,031,292.38 = 327,495.39 : x
  2. Step 2: Convert to fraction form
    687,509.61/1,031,292.38 = 327,495.39/x
  3. Step 3: Cross multiply
    687,509.61x = 1,031,292.38 × 327,495.39
  4. Step 4: Simplify right side
    687,509.61x = 337,743,498,554.65
  5. Step 5: Solve for x
    x = 337,743,498,554.65/687,509.61
  6. Step 6: Final answer
    x = 491,256.40

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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.