Home / 860,665.28-1,187,634.88-498,016.80

Finding the Fourth Proportional to 860,665.28, 1,187,634.88 and 498,016.80

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Solution

The fourth proportional to 860,665.28, 1,187,634.88 and 498,016.80 is: 687,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,665.28 : 1,187,634.88 = 498,016.80 : x
  2. Step 2: Convert to fraction form
    860,665.28/1,187,634.88 = 498,016.80/x
  3. Step 3: Cross multiply
    860,665.28x = 1,187,634.88 × 498,016.80
  4. Step 4: Simplify right side
    860,665.28x = 591,462,122,505.98
  5. Step 5: Solve for x
    x = 591,462,122,505.98/860,665.28
  6. Step 6: Final answer
    x = 687,215.04

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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.