Home / 278,909,532.60-418,380,045.30-84,827,279.40

Finding the Fourth Proportional to 278,909,532.60, 418,380,045.30 and 84,827,279.40

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Solution

The fourth proportional to 278,909,532.60, 418,380,045.30 and 84,827,279.40 is: 127,245,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909,532.60 : 418,380,045.30 = 84,827,279.40 : x
  2. Step 2: Convert to fraction form
    278,909,532.60/418,380,045.30 = 84,827,279.40/x
  3. Step 3: Cross multiply
    278,909,532.60x = 418,380,045.30 × 84,827,279.40
  4. Step 4: Simplify right side
    278,909,532.60x = 35,490,040,998,047,760
  5. Step 5: Solve for x
    x = 35,490,040,998,047,760/278,909,532.60
  6. Step 6: Final answer
    x = 127,245,708.20

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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.