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Finding the Fourth Proportional to 911,742.60, 1,365,645.60 and 754,278.60

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Solution

The fourth proportional to 911,742.60, 1,365,645.60 and 754,278.60 is: 1,129,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,742.60 : 1,365,645.60 = 754,278.60 : x
  2. Step 2: Convert to fraction form
    911,742.60/1,365,645.60 = 754,278.60/x
  3. Step 3: Cross multiply
    911,742.60x = 1,365,645.60 × 754,278.60
  4. Step 4: Simplify right side
    911,742.60x = 1,030,077,251,264.16
  5. Step 5: Solve for x
    x = 1,030,077,251,264.16/911,742.60
  6. Step 6: Final answer
    x = 1,129,789.54

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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.