Home / 391,810,656.80-587,715,897.42-142,834,579.88

Finding the Fourth Proportional to 391,810,656.80, 587,715,897.42 and 142,834,579.88

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Solution

The fourth proportional to 391,810,656.80, 587,715,897.42 and 142,834,579.88 is: 214,251,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,810,656.80 : 587,715,897.42 = 142,834,579.88 : x
  2. Step 2: Convert to fraction form
    391,810,656.80/587,715,897.42 = 142,834,579.88/x
  3. Step 3: Cross multiply
    391,810,656.80x = 587,715,897.42 × 142,834,579.88
  4. Step 4: Simplify right side
    391,810,656.80x = 83,946,153,293,844,288
  5. Step 5: Solve for x
    x = 83,946,153,293,844,288/391,810,656.80
  6. Step 6: Final answer
    x = 214,251,837.81

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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.