Home / 525,132.90-787,116.15-288,645.30

Finding the Fourth Proportional to 525,132.90, 787,116.15 and 288,645.30

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Solution

The fourth proportional to 525,132.90, 787,116.15 and 288,645.30 is: 432,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,132.90 : 787,116.15 = 288,645.30 : x
  2. Step 2: Convert to fraction form
    525,132.90/787,116.15 = 288,645.30/x
  3. Step 3: Cross multiply
    525,132.90x = 787,116.15 × 288,645.30
  4. Step 4: Simplify right side
    525,132.90x = 227,197,377,251.60
  5. Step 5: Solve for x
    x = 227,197,377,251.60/525,132.90
  6. Step 6: Final answer
    x = 432,647.39

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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.