Home / 10,520,686,617.78-15,779,056,961.07-5,278,887,402.42

Finding the Fourth Proportional to 10,520,686,617.78, 15,779,056,961.07 and 5,278,887,402.42

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Solution

The fourth proportional to 10,520,686,617.78, 15,779,056,961.07 and 5,278,887,402.42 is: 7,917,341,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520,686,617.78 : 15,779,056,961.07 = 5,278,887,402.42 : x
  2. Step 2: Convert to fraction form
    10,520,686,617.78/15,779,056,961.07 = 5,278,887,402.42/x
  3. Step 3: Cross multiply
    10,520,686,617.78x = 15,779,056,961.07 × 5,278,887,402.42
  4. Step 4: Simplify right side
    10,520,686,617.78x = 83,295,865,013,860,024,320
  5. Step 5: Solve for x
    x = 83,295,865,013,860,024,320/10,520,686,617.78
  6. Step 6: Final answer
    x = 7,917,341,143.22

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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.