Home / 860,517.90-1,187,399.52-478,471.14

Finding the Fourth Proportional to 860,517.90, 1,187,399.52 and 478,471.14

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Solution

The fourth proportional to 860,517.90, 1,187,399.52 and 478,471.14 is: 660,226.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,517.90 : 1,187,399.52 = 478,471.14 : x
  2. Step 2: Convert to fraction form
    860,517.90/1,187,399.52 = 478,471.14/x
  3. Step 3: Cross multiply
    860,517.90x = 1,187,399.52 × 478,471.14
  4. Step 4: Simplify right side
    860,517.90x = 568,136,401,969.85
  5. Step 5: Solve for x
    x = 568,136,401,969.85/860,517.90
  6. Step 6: Final answer
    x = 660,226.13

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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.