Home / 419,631,729.59-579,081,642.23-231,455,982.21

Finding the Fourth Proportional to 419,631,729.59, 579,081,642.23 and 231,455,982.21

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Solution

The fourth proportional to 419,631,729.59, 579,081,642.23 and 231,455,982.21 is: 319,403,660.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,631,729.59 : 579,081,642.23 = 231,455,982.21 : x
  2. Step 2: Convert to fraction form
    419,631,729.59/579,081,642.23 = 231,455,982.21/x
  3. Step 3: Cross multiply
    419,631,729.59x = 579,081,642.23 × 231,455,982.21
  4. Step 4: Simplify right side
    419,631,729.59x = 134,031,910,282,478,272
  5. Step 5: Solve for x
    x = 134,031,910,282,478,272/419,631,729.59
  6. Step 6: Final answer
    x = 319,403,660.00

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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.