Home / 1,276,938.20-1,915,407.30-745,059.80

Finding the Fourth Proportional to 1,276,938.20, 1,915,407.30 and 745,059.80

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Solution

The fourth proportional to 1,276,938.20, 1,915,407.30 and 745,059.80 is: 1,117,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,938.20 : 1,915,407.30 = 745,059.80 : x
  2. Step 2: Convert to fraction form
    1,276,938.20/1,915,407.30 = 745,059.80/x
  3. Step 3: Cross multiply
    1,276,938.20x = 1,915,407.30 × 745,059.80
  4. Step 4: Simplify right side
    1,276,938.20x = 1,427,092,979,856.54
  5. Step 5: Solve for x
    x = 1,427,092,979,856.54/1,276,938.20
  6. Step 6: Final answer
    x = 1,117,589.70

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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.