Home / 800,781,680.70-1,201,172,521.05-628,789,002.30

Finding the Fourth Proportional to 800,781,680.70, 1,201,172,521.05 and 628,789,002.30

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Solution

The fourth proportional to 800,781,680.70, 1,201,172,521.05 and 628,789,002.30 is: 943,183,503.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,781,680.70 : 1,201,172,521.05 = 628,789,002.30 : x
  2. Step 2: Convert to fraction form
    800,781,680.70/1,201,172,521.05 = 628,789,002.30/x
  3. Step 3: Cross multiply
    800,781,680.70x = 1,201,172,521.05 × 628,789,002.30
  4. Step 4: Simplify right side
    800,781,680.70x = 755,284,071,101,205,120
  5. Step 5: Solve for x
    x = 755,284,071,101,205,120/800,781,680.70
  6. Step 6: Final answer
    x = 943,183,503.45

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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.