Home / 1,398,472,588.35-1,929,891,869.96-771,940,854.27

Finding the Fourth Proportional to 1,398,472,588.35, 1,929,891,869.96 and 771,940,854.27

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Solution

The fourth proportional to 1,398,472,588.35, 1,929,891,869.96 and 771,940,854.27 is: 1,065,278,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,472,588.35 : 1,929,891,869.96 = 771,940,854.27 : x
  2. Step 2: Convert to fraction form
    1,398,472,588.35/1,929,891,869.96 = 771,940,854.27/x
  3. Step 3: Cross multiply
    1,398,472,588.35x = 1,929,891,869.96 × 771,940,854.27
  4. Step 4: Simplify right side
    1,398,472,588.35x = 1,489,762,378,741,790,464
  5. Step 5: Solve for x
    x = 1,489,762,378,741,790,464/1,398,472,588.35
  6. Step 6: Final answer
    x = 1,065,278,212.21

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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.