Home / 1,279,747,731.12-1,765,962,666.54-722,723,161.38

Finding the Fourth Proportional to 1,279,747,731.12, 1,765,962,666.54 and 722,723,161.38

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Solution

The fourth proportional to 1,279,747,731.12, 1,765,962,666.54 and 722,723,161.38 is: 997,307,586.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,747,731.12 : 1,765,962,666.54 = 722,723,161.38 : x
  2. Step 2: Convert to fraction form
    1,279,747,731.12/1,765,962,666.54 = 722,723,161.38/x
  3. Step 3: Cross multiply
    1,279,747,731.12x = 1,765,962,666.54 × 722,723,161.38
  4. Step 4: Simplify right side
    1,279,747,731.12x = 1,276,302,121,240,843,520
  5. Step 5: Solve for x
    x = 1,276,302,121,240,843,520/1,279,747,731.12
  6. Step 6: Final answer
    x = 997,307,586.65

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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.