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Finding the Fourth Proportional to 954,687.78, 1,431,915.03 and 393,649.38

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Solution

The fourth proportional to 954,687.78, 1,431,915.03 and 393,649.38 is: 590,425.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    954,687.78 : 1,431,915.03 = 393,649.38 : x
  2. Step 2: Convert to fraction form
    954,687.78/1,431,915.03 = 393,649.38/x
  3. Step 3: Cross multiply
    954,687.78x = 1,431,915.03 × 393,649.38
  4. Step 4: Simplify right side
    954,687.78x = 563,672,463,772.18
  5. Step 5: Solve for x
    x = 563,672,463,772.18/954,687.78
  6. Step 6: Final answer
    x = 590,425.98

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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.