Home / 814,346,819.30-1,221,520,228.95-426,019,600.10

Finding the Fourth Proportional to 814,346,819.30, 1,221,520,228.95 and 426,019,600.10

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Solution

The fourth proportional to 814,346,819.30, 1,221,520,228.95 and 426,019,600.10 is: 639,029,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,346,819.30 : 1,221,520,228.95 = 426,019,600.10 : x
  2. Step 2: Convert to fraction form
    814,346,819.30/1,221,520,228.95 = 426,019,600.10/x
  3. Step 3: Cross multiply
    814,346,819.30x = 1,221,520,228.95 × 426,019,600.10
  4. Step 4: Simplify right side
    814,346,819.30x = 520,391,559,451,339,520
  5. Step 5: Solve for x
    x = 520,391,559,451,339,520/814,346,819.30
  6. Step 6: Final answer
    x = 639,029,400.15

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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.