Home / 1,247,699,540-1,868,578,284.52-721,960,666.66

Finding the Fourth Proportional to 1,247,699,540, 1,868,578,284.52 and 721,960,666.66

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Solution

The fourth proportional to 1,247,699,540, 1,868,578,284.52 and 721,960,666.66 is: 1,081,221,865.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,699,540 : 1,868,578,284.52 = 721,960,666.66 : x
  2. Step 2: Convert to fraction form
    1,247,699,540/1,868,578,284.52 = 721,960,666.66/x
  3. Step 3: Cross multiply
    1,247,699,540x = 1,868,578,284.52 × 721,960,666.66
  4. Step 4: Simplify right side
    1,247,699,540x = 1,349,040,023,998,458,368
  5. Step 5: Solve for x
    x = 1,349,040,023,998,458,368/1,247,699,540
  6. Step 6: Final answer
    x = 1,081,221,865.32

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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.