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Finding the Fourth Proportional to 487,361.64, 731,042.46 and 321,110.76

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Solution

The fourth proportional to 487,361.64, 731,042.46 and 321,110.76 is: 481,666.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,361.64 : 731,042.46 = 321,110.76 : x
  2. Step 2: Convert to fraction form
    487,361.64/731,042.46 = 321,110.76/x
  3. Step 3: Cross multiply
    487,361.64x = 731,042.46 × 321,110.76
  4. Step 4: Simplify right side
    487,361.64x = 234,745,599,922.87
  5. Step 5: Solve for x
    x = 234,745,599,922.87/487,361.64
  6. Step 6: Final answer
    x = 481,666.14

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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.