Home / 921,286,709.92-1,381,930,064.90-307,870,935.68

Finding the Fourth Proportional to 921,286,709.92, 1,381,930,064.90 and 307,870,935.68

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Solution

The fourth proportional to 921,286,709.92, 1,381,930,064.90 and 307,870,935.68 is: 461,806,403.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,286,709.92 : 1,381,930,064.90 = 307,870,935.68 : x
  2. Step 2: Convert to fraction form
    921,286,709.92/1,381,930,064.90 = 307,870,935.68/x
  3. Step 3: Cross multiply
    921,286,709.92x = 1,381,930,064.90 × 307,870,935.68
  4. Step 4: Simplify right side
    921,286,709.92x = 425,456,102,125,086,144
  5. Step 5: Solve for x
    x = 425,456,102,125,086,144/921,286,709.92
  6. Step 6: Final answer
    x = 461,806,403.53

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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.