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Finding the Fourth Proportional to 623,871.31, 860,945 and 337,391.40

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Solution

The fourth proportional to 623,871.31, 860,945 and 337,391.40 is: 465,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,871.31 : 860,945 = 337,391.40 : x
  2. Step 2: Convert to fraction form
    623,871.31/860,945 = 337,391.40/x
  3. Step 3: Cross multiply
    623,871.31x = 860,945 × 337,391.40
  4. Step 4: Simplify right side
    623,871.31x = 290,475,438,873
  5. Step 5: Solve for x
    x = 290,475,438,873/623,871.31
  6. Step 6: Final answer
    x = 465,601.53

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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.