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Finding the Fourth Proportional to 1,273,862.75, 1,757,978.96 and 730,103.46

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Solution

The fourth proportional to 1,273,862.75, 1,757,978.96 and 730,103.46 is: 1,007,570.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,862.75 : 1,757,978.96 = 730,103.46 : x
  2. Step 2: Convert to fraction form
    1,273,862.75/1,757,978.96 = 730,103.46/x
  3. Step 3: Cross multiply
    1,273,862.75x = 1,757,978.96 × 730,103.46
  4. Step 4: Simplify right side
    1,273,862.75x = 1,283,506,517,652.68
  5. Step 5: Solve for x
    x = 1,283,506,517,652.68/1,273,862.75
  6. Step 6: Final answer
    x = 1,007,570.50

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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.