Home / 485,029,974.45-727,544,961.68-139,994,857.65

Finding the Fourth Proportional to 485,029,974.45, 727,544,961.68 and 139,994,857.65

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Solution

The fourth proportional to 485,029,974.45, 727,544,961.68 and 139,994,857.65 is: 209,992,286.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,029,974.45 : 727,544,961.68 = 139,994,857.65 : x
  2. Step 2: Convert to fraction form
    485,029,974.45/727,544,961.68 = 139,994,857.65/x
  3. Step 3: Cross multiply
    485,029,974.45x = 727,544,961.68 × 139,994,857.65
  4. Step 4: Simplify right side
    485,029,974.45x = 101,852,553,343,666,336
  5. Step 5: Solve for x
    x = 101,852,553,343,666,336/485,029,974.45
  6. Step 6: Final answer
    x = 209,992,286.48

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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.