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Finding the Fourth Proportional to 623,915.60, 861,003.51 and 337,435.68

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Solution

The fourth proportional to 623,915.60, 861,003.51 and 337,435.68 is: 465,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,915.60 : 861,003.51 = 337,435.68 : x
  2. Step 2: Convert to fraction form
    623,915.60/861,003.51 = 337,435.68/x
  3. Step 3: Cross multiply
    623,915.60x = 861,003.51 × 337,435.68
  4. Step 4: Simplify right side
    623,915.60x = 290,533,304,879.24
  5. Step 5: Solve for x
    x = 290,533,304,879.24/623,915.60
  6. Step 6: Final answer
    x = 465,661.23

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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.