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Finding the Fourth Proportional to 1,943,997.60, 2,916,871.20 and 878,491.20

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Solution

The fourth proportional to 1,943,997.60, 2,916,871.20 and 878,491.20 is: 1,318,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943,997.60 : 2,916,871.20 = 878,491.20 : x
  2. Step 2: Convert to fraction form
    1,943,997.60/2,916,871.20 = 878,491.20/x
  3. Step 3: Cross multiply
    1,943,997.60x = 2,916,871.20 × 878,491.20
  4. Step 4: Simplify right side
    1,943,997.60x = 2,562,445,680,733.44
  5. Step 5: Solve for x
    x = 2,562,445,680,733.44/1,943,997.60
  6. Step 6: Final answer
    x = 1,318,132.12

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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.