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Finding the Fourth Proportional to 1,609,834.40, 2,416,306.80 and 979,978.40

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Solution

The fourth proportional to 1,609,834.40, 2,416,306.80 and 979,978.40 is: 1,470,914.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609,834.40 : 2,416,306.80 = 979,978.40 : x
  2. Step 2: Convert to fraction form
    1,609,834.40/2,416,306.80 = 979,978.40/x
  3. Step 3: Cross multiply
    1,609,834.40x = 2,416,306.80 × 979,978.40
  4. Step 4: Simplify right side
    1,609,834.40x = 2,367,928,471,773.12
  5. Step 5: Solve for x
    x = 2,367,928,471,773.12/1,609,834.40
  6. Step 6: Final answer
    x = 1,470,914.32

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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.