Home / 1,388,391,105.16-1,915,974,422.58-761,870,006.92

Finding the Fourth Proportional to 1,388,391,105.16, 1,915,974,422.58 and 761,870,006.92

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Solution

The fourth proportional to 1,388,391,105.16, 1,915,974,422.58 and 761,870,006.92 is: 1,051,377,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,391,105.16 : 1,915,974,422.58 = 761,870,006.92 : x
  2. Step 2: Convert to fraction form
    1,388,391,105.16/1,915,974,422.58 = 761,870,006.92/x
  3. Step 3: Cross multiply
    1,388,391,105.16x = 1,915,974,422.58 × 761,870,006.92
  4. Step 4: Simplify right side
    1,388,391,105.16x = 1,459,723,446,589,567,488
  5. Step 5: Solve for x
    x = 1,459,723,446,589,567,488/1,388,391,105.16
  6. Step 6: Final answer
    x = 1,051,377,699.82

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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.