Home / 687,584.20-1,031,376.30-288,092.20

Finding the Fourth Proportional to 687,584.20, 1,031,376.30 and 288,092.20

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Solution

The fourth proportional to 687,584.20, 1,031,376.30 and 288,092.20 is: 432,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,584.20 : 1,031,376.30 = 288,092.20 : x
  2. Step 2: Convert to fraction form
    687,584.20/1,031,376.30 = 288,092.20/x
  3. Step 3: Cross multiply
    687,584.20x = 1,031,376.30 × 288,092.20
  4. Step 4: Simplify right side
    687,584.20x = 297,131,467,294.86
  5. Step 5: Solve for x
    x = 297,131,467,294.86/687,584.20
  6. Step 6: Final answer
    x = 432,138.30

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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.