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Finding the Fourth Proportional to 2,491,411.20, 3,735,734.40 and 993,811.20

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Solution

The fourth proportional to 2,491,411.20, 3,735,734.40 and 993,811.20 is: 1,490,165.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491,411.20 : 3,735,734.40 = 993,811.20 : x
  2. Step 2: Convert to fraction form
    2,491,411.20/3,735,734.40 = 993,811.20/x
  3. Step 3: Cross multiply
    2,491,411.20x = 3,735,734.40 × 993,811.20
  4. Step 4: Simplify right side
    2,491,411.20x = 3,712,614,686,945.28
  5. Step 5: Solve for x
    x = 3,712,614,686,945.28/2,491,411.20
  6. Step 6: Final answer
    x = 1,490,165.37

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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.