Home / 860,500.76-1,187,351.34-478,517.72

Finding the Fourth Proportional to 860,500.76, 1,187,351.34 and 478,517.72

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Solution

The fourth proportional to 860,500.76, 1,187,351.34 and 478,517.72 is: 660,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,500.76 : 1,187,351.34 = 478,517.72 : x
  2. Step 2: Convert to fraction form
    860,500.76/1,187,351.34 = 478,517.72/x
  3. Step 3: Cross multiply
    860,500.76x = 1,187,351.34 × 478,517.72
  4. Step 4: Simplify right side
    860,500.76x = 568,168,656,055.75
  5. Step 5: Solve for x
    x = 568,168,656,055.75/860,500.76
  6. Step 6: Final answer
    x = 660,276.76

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Double scale
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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.