Home / 1,389,962,895.24-1,918,186,253.52-817,785,887.70

Finding the Fourth Proportional to 1,389,962,895.24, 1,918,186,253.52 and 817,785,887.70

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Solution

The fourth proportional to 1,389,962,895.24, 1,918,186,253.52 and 817,785,887.70 is: 1,128,566,563.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,962,895.24 : 1,918,186,253.52 = 817,785,887.70 : x
  2. Step 2: Convert to fraction form
    1,389,962,895.24/1,918,186,253.52 = 817,785,887.70/x
  3. Step 3: Cross multiply
    1,389,962,895.24x = 1,918,186,253.52 × 817,785,887.70
  4. Step 4: Simplify right side
    1,389,962,895.24x = 1,568,665,648,108,790,528
  5. Step 5: Solve for x
    x = 1,568,665,648,108,790,528/1,389,962,895.24
  6. Step 6: Final answer
    x = 1,128,566,563.53

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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.