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Finding the Fourth Proportional to 659,616.70, 989,425.05 and 449,664.70

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Solution

The fourth proportional to 659,616.70, 989,425.05 and 449,664.70 is: 674,497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,616.70 : 989,425.05 = 449,664.70 : x
  2. Step 2: Convert to fraction form
    659,616.70/989,425.05 = 449,664.70/x
  3. Step 3: Cross multiply
    659,616.70x = 989,425.05 × 449,664.70
  4. Step 4: Simplify right side
    659,616.70x = 444,909,518,280.74
  5. Step 5: Solve for x
    x = 444,909,518,280.74/659,616.70
  6. Step 6: Final answer
    x = 674,497.05

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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.