Home / 921,286,738.76-1,381,930,108.20-307,870,964.51

Finding the Fourth Proportional to 921,286,738.76, 1,381,930,108.20 and 307,870,964.51

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Solution

The fourth proportional to 921,286,738.76, 1,381,930,108.20 and 307,870,964.51 is: 461,806,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,286,738.76 : 1,381,930,108.20 = 307,870,964.51 : x
  2. Step 2: Convert to fraction form
    921,286,738.76/1,381,930,108.20 = 307,870,964.51/x
  3. Step 3: Cross multiply
    921,286,738.76x = 1,381,930,108.20 × 307,870,964.51
  4. Step 4: Simplify right side
    921,286,738.76x = 425,456,155,290,033,024
  5. Step 5: Solve for x
    x = 425,456,155,290,033,024/921,286,738.76
  6. Step 6: Final answer
    x = 461,806,446.78

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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.