Home / 391,666,451.21-587,503,772.89-115,322,897.60

Finding the Fourth Proportional to 391,666,451.21, 587,503,772.89 and 115,322,897.60

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Solution

The fourth proportional to 391,666,451.21, 587,503,772.89 and 115,322,897.60 is: 172,985,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,666,451.21 : 587,503,772.89 = 115,322,897.60 : x
  2. Step 2: Convert to fraction form
    391,666,451.21/587,503,772.89 = 115,322,897.60/x
  3. Step 3: Cross multiply
    391,666,451.21x = 587,503,772.89 × 115,322,897.60
  4. Step 4: Simplify right side
    391,666,451.21x = 67,752,637,439,584,440
  5. Step 5: Solve for x
    x = 67,752,637,439,584,440/391,666,451.21
  6. Step 6: Final answer
    x = 172,985,552.45

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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.