Home / 860,616.80-1,187,693.26-478,635.38

Finding the Fourth Proportional to 860,616.80, 1,187,693.26 and 478,635.38

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Solution

The fourth proportional to 860,616.80, 1,187,693.26 and 478,635.38 is: 660,540.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,616.80 : 1,187,693.26 = 478,635.38 : x
  2. Step 2: Convert to fraction form
    860,616.80/1,187,693.26 = 478,635.38/x
  3. Step 3: Cross multiply
    860,616.80x = 1,187,693.26 × 478,635.38
  4. Step 4: Simplify right side
    860,616.80x = 568,472,014,823.54
  5. Step 5: Solve for x
    x = 568,472,014,823.54/860,616.80
  6. Step 6: Final answer
    x = 660,540.23

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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.