Home / 431,070,013.20-646,605,019.80-124,372,131.60

Finding the Fourth Proportional to 431,070,013.20, 646,605,019.80 and 124,372,131.60

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Solution

The fourth proportional to 431,070,013.20, 646,605,019.80 and 124,372,131.60 is: 186,558,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,070,013.20 : 646,605,019.80 = 124,372,131.60 : x
  2. Step 2: Convert to fraction form
    431,070,013.20/646,605,019.80 = 124,372,131.60/x
  3. Step 3: Cross multiply
    431,070,013.20x = 646,605,019.80 × 124,372,131.60
  4. Step 4: Simplify right side
    431,070,013.20x = 80,419,644,615,786,192
  5. Step 5: Solve for x
    x = 80,419,644,615,786,192/431,070,013.20
  6. Step 6: Final answer
    x = 186,558,197.40

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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.