Home / 689,793,410.40-1,034,690,115.60-639,908,815.20

Finding the Fourth Proportional to 689,793,410.40, 1,034,690,115.60 and 639,908,815.20

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Solution

The fourth proportional to 689,793,410.40, 1,034,690,115.60 and 639,908,815.20 is: 959,863,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,793,410.40 : 1,034,690,115.60 = 639,908,815.20 : x
  2. Step 2: Convert to fraction form
    689,793,410.40/1,034,690,115.60 = 639,908,815.20/x
  3. Step 3: Cross multiply
    689,793,410.40x = 1,034,690,115.60 × 639,908,815.20
  4. Step 4: Simplify right side
    689,793,410.40x = 662,107,325,972,747,136
  5. Step 5: Solve for x
    x = 662,107,325,972,747,136/689,793,410.40
  6. Step 6: Final answer
    x = 959,863,222.80

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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.