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Finding the Fourth Proportional to 623,915.47, 861,003.34 and 337,435.56

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Solution

The fourth proportional to 623,915.47, 861,003.34 and 337,435.56 is: 465,661.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,915.47 : 861,003.34 = 337,435.56 : x
  2. Step 2: Convert to fraction form
    623,915.47/861,003.34 = 337,435.56/x
  3. Step 3: Cross multiply
    623,915.47x = 861,003.34 × 337,435.56
  4. Step 4: Simplify right side
    623,915.47x = 290,533,144,194.77
  5. Step 5: Solve for x
    x = 290,533,144,194.77/623,915.47
  6. Step 6: Final answer
    x = 465,661.07

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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.