Home / 10,520,686,617.28-15,779,056,960.32-5,278,887,401.92

Finding the Fourth Proportional to 10,520,686,617.28, 15,779,056,960.32 and 5,278,887,401.92

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Solution

The fourth proportional to 10,520,686,617.28, 15,779,056,960.32 and 5,278,887,401.92 is: 7,917,341,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520,686,617.28 : 15,779,056,960.32 = 5,278,887,401.92 : x
  2. Step 2: Convert to fraction form
    10,520,686,617.28/15,779,056,960.32 = 5,278,887,401.92/x
  3. Step 3: Cross multiply
    10,520,686,617.28x = 15,779,056,960.32 × 5,278,887,401.92
  4. Step 4: Simplify right side
    10,520,686,617.28x = 83,295,865,002,011,344,896
  5. Step 5: Solve for x
    x = 83,295,865,002,011,344,896/10,520,686,617.28
  6. Step 6: Final answer
    x = 7,917,341,142.47

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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.