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Finding the Fourth Proportional to 605,639.80, 908,459.70 and 268,550.20

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Solution

The fourth proportional to 605,639.80, 908,459.70 and 268,550.20 is: 402,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,639.80 : 908,459.70 = 268,550.20 : x
  2. Step 2: Convert to fraction form
    605,639.80/908,459.70 = 268,550.20/x
  3. Step 3: Cross multiply
    605,639.80x = 908,459.70 × 268,550.20
  4. Step 4: Simplify right side
    605,639.80x = 243,967,034,126.94
  5. Step 5: Solve for x
    x = 243,967,034,126.94/605,639.80
  6. Step 6: Final answer
    x = 402,825.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.