Home / 840,728.40-1,160,233.20-458,776.14

Finding the Fourth Proportional to 840,728.40, 1,160,233.20 and 458,776.14

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Solution

The fourth proportional to 840,728.40, 1,160,233.20 and 458,776.14 is: 633,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,728.40 : 1,160,233.20 = 458,776.14 : x
  2. Step 2: Convert to fraction form
    840,728.40/1,160,233.20 = 458,776.14/x
  3. Step 3: Cross multiply
    840,728.40x = 1,160,233.20 × 458,776.14
  4. Step 4: Simplify right side
    840,728.40x = 532,287,308,995.85
  5. Step 5: Solve for x
    x = 532,287,308,995.85/840,728.40
  6. Step 6: Final answer
    x = 633,126.36

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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.