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Finding the Fourth Proportional to 865,140.30, 1,294,648.65 and 754,040.70

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Solution

The fourth proportional to 865,140.30, 1,294,648.65 and 754,040.70 is: 1,128,392.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,140.30 : 1,294,648.65 = 754,040.70 : x
  2. Step 2: Convert to fraction form
    865,140.30/1,294,648.65 = 754,040.70/x
  3. Step 3: Cross multiply
    865,140.30x = 1,294,648.65 × 754,040.70
  4. Step 4: Simplify right side
    865,140.30x = 976,217,774,300.06
  5. Step 5: Solve for x
    x = 976,217,774,300.06/865,140.30
  6. Step 6: Final answer
    x = 1,128,392.44

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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.