Home / 861,796,140.12-1,292,875,786.26-279,484,981.20

Finding the Fourth Proportional to 861,796,140.12, 1,292,875,786.26 and 279,484,981.20

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Solution

The fourth proportional to 861,796,140.12, 1,292,875,786.26 and 279,484,981.20 is: 419,286,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,796,140.12 : 1,292,875,786.26 = 279,484,981.20 : x
  2. Step 2: Convert to fraction form
    861,796,140.12/1,292,875,786.26 = 279,484,981.20/x
  3. Step 3: Cross multiply
    861,796,140.12x = 1,292,875,786.26 × 279,484,981.20
  4. Step 4: Simplify right side
    861,796,140.12x = 361,339,364,816,811,328
  5. Step 5: Solve for x
    x = 361,339,364,816,811,328/861,796,140.12
  6. Step 6: Final answer
    x = 419,286,357.87

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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.