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Finding the Fourth Proportional to 1,982,863.76, 2,736,368.36 and 1,077,445.76

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Solution

The fourth proportional to 1,982,863.76, 2,736,368.36 and 1,077,445.76 is: 1,486,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982,863.76 : 2,736,368.36 = 1,077,445.76 : x
  2. Step 2: Convert to fraction form
    1,982,863.76/2,736,368.36 = 1,077,445.76/x
  3. Step 3: Cross multiply
    1,982,863.76x = 2,736,368.36 × 1,077,445.76
  4. Step 4: Simplify right side
    1,982,863.76x = 2,948,288,487,280.15
  5. Step 5: Solve for x
    x = 2,948,288,487,280.15/1,982,863.76
  6. Step 6: Final answer
    x = 1,486,884.04

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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.