Home / 672,021,616.06-927,386,517.50-389,821,130.65

Finding the Fourth Proportional to 672,021,616.06, 927,386,517.50 and 389,821,130.65

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Solution

The fourth proportional to 672,021,616.06, 927,386,517.50 and 389,821,130.65 is: 537,951,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,021,616.06 : 927,386,517.50 = 389,821,130.65 : x
  2. Step 2: Convert to fraction form
    672,021,616.06/927,386,517.50 = 389,821,130.65/x
  3. Step 3: Cross multiply
    672,021,616.06x = 927,386,517.50 × 389,821,130.65
  4. Step 4: Simplify right side
    672,021,616.06x = 361,514,860,802,087,936
  5. Step 5: Solve for x
    x = 361,514,860,802,087,936/672,021,616.06
  6. Step 6: Final answer
    x = 537,951,238.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.