Home / 1,279,747,729.62-1,765,962,664.47-722,723,159.88

Finding the Fourth Proportional to 1,279,747,729.62, 1,765,962,664.47 and 722,723,159.88

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Solution

The fourth proportional to 1,279,747,729.62, 1,765,962,664.47 and 722,723,159.88 is: 997,307,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,747,729.62 : 1,765,962,664.47 = 722,723,159.88 : x
  2. Step 2: Convert to fraction form
    1,279,747,729.62/1,765,962,664.47 = 722,723,159.88/x
  3. Step 3: Cross multiply
    1,279,747,729.62x = 1,765,962,664.47 × 722,723,159.88
  4. Step 4: Simplify right side
    1,279,747,729.62x = 1,276,302,117,095,862,528
  5. Step 5: Solve for x
    x = 1,276,302,117,095,862,528/1,279,747,729.62
  6. Step 6: Final answer
    x = 997,307,584.58

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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.