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Finding the Fourth Proportional to 415,890.60, 623,835.90 and 371,567.40

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Solution

The fourth proportional to 415,890.60, 623,835.90 and 371,567.40 is: 557,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,890.60 : 623,835.90 = 371,567.40 : x
  2. Step 2: Convert to fraction form
    415,890.60/623,835.90 = 371,567.40/x
  3. Step 3: Cross multiply
    415,890.60x = 623,835.90 × 371,567.40
  4. Step 4: Simplify right side
    415,890.60x = 231,797,083,389.66
  5. Step 5: Solve for x
    x = 231,797,083,389.66/415,890.60
  6. Step 6: Final answer
    x = 557,351.10

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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.