Home / 1,438,901.45-2,158,565.42-479,043.55

Finding the Fourth Proportional to 1,438,901.45, 2,158,565.42 and 479,043.55

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Solution

The fourth proportional to 1,438,901.45, 2,158,565.42 and 479,043.55 is: 718,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,901.45 : 2,158,565.42 = 479,043.55 : x
  2. Step 2: Convert to fraction form
    1,438,901.45/2,158,565.42 = 479,043.55/x
  3. Step 3: Cross multiply
    1,438,901.45x = 2,158,565.42 × 479,043.55
  4. Step 4: Simplify right side
    1,438,901.45x = 1,034,046,845,599.86
  5. Step 5: Solve for x
    x = 1,034,046,845,599.86/1,438,901.45
  6. Step 6: Final answer
    x = 718,636.32

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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.