Home / 3,990,147,886.70-5,985,221,830.05-2,520,819,809.90

Finding the Fourth Proportional to 3,990,147,886.70, 5,985,221,830.05 and 2,520,819,809.90

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Solution

The fourth proportional to 3,990,147,886.70, 5,985,221,830.05 and 2,520,819,809.90 is: 3,781,229,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,147,886.70 : 5,985,221,830.05 = 2,520,819,809.90 : x
  2. Step 2: Convert to fraction form
    3,990,147,886.70/5,985,221,830.05 = 2,520,819,809.90/x
  3. Step 3: Cross multiply
    3,990,147,886.70x = 5,985,221,830.05 × 2,520,819,809.90
  4. Step 4: Simplify right side
    3,990,147,886.70x = 15,087,665,755,835,971,584
  5. Step 5: Solve for x
    x = 15,087,665,755,835,971,584/3,990,147,886.70
  6. Step 6: Final answer
    x = 3,781,229,714.85

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Similar ratio
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1.5x scale

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.