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Finding the Fourth Proportional to 1,354,862.14, 1,869,712.37 and 743,019.20

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Solution

The fourth proportional to 1,354,862.14, 1,869,712.37 and 743,019.20 is: 1,025,367.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,862.14 : 1,869,712.37 = 743,019.20 : x
  2. Step 2: Convert to fraction form
    1,354,862.14/1,869,712.37 = 743,019.20/x
  3. Step 3: Cross multiply
    1,354,862.14x = 1,869,712.37 × 743,019.20
  4. Step 4: Simplify right side
    1,354,862.14x = 1,389,232,176,323.85
  5. Step 5: Solve for x
    x = 1,389,232,176,323.85/1,354,862.14
  6. Step 6: Final answer
    x = 1,025,367.92

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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.