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Finding the Fourth Proportional to 1,988,871.86, 2,984,793.53 and 1,347,655.20

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Solution

The fourth proportional to 1,988,871.86, 2,984,793.53 and 1,347,655.20 is: 2,022,489.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,871.86 : 2,984,793.53 = 1,347,655.20 : x
  2. Step 2: Convert to fraction form
    1,988,871.86/2,984,793.53 = 1,347,655.20/x
  3. Step 3: Cross multiply
    1,988,871.86x = 2,984,793.53 × 1,347,655.20
  4. Step 4: Simplify right side
    1,988,871.86x = 4,022,472,514,892.58
  5. Step 5: Solve for x
    x = 4,022,472,514,892.58/1,988,871.86
  6. Step 6: Final answer
    x = 2,022,489.54

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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.