Home / 860,654.88-1,187,748.50-478,680.75

Finding the Fourth Proportional to 860,654.88, 1,187,748.50 and 478,680.75

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Solution

The fourth proportional to 860,654.88, 1,187,748.50 and 478,680.75 is: 660,604.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,654.88 : 1,187,748.50 = 478,680.75 : x
  2. Step 2: Convert to fraction form
    860,654.88/1,187,748.50 = 478,680.75/x
  3. Step 3: Cross multiply
    860,654.88x = 1,187,748.50 × 478,680.75
  4. Step 4: Simplify right side
    860,654.88x = 568,552,340,397.97
  5. Step 5: Solve for x
    x = 568,552,340,397.97/860,654.88
  6. Step 6: Final answer
    x = 660,604.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.