Home / 727,610.78-1,004,133.12-405,320.78

Finding the Fourth Proportional to 727,610.78, 1,004,133.12 and 405,320.78

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Solution

The fourth proportional to 727,610.78, 1,004,133.12 and 405,320.78 is: 559,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,610.78 : 1,004,133.12 = 405,320.78 : x
  2. Step 2: Convert to fraction form
    727,610.78/1,004,133.12 = 405,320.78/x
  3. Step 3: Cross multiply
    727,610.78x = 1,004,133.12 × 405,320.78
  4. Step 4: Simplify right side
    727,610.78x = 406,996,019,422.23
  5. Step 5: Solve for x
    x = 406,996,019,422.23/727,610.78
  6. Step 6: Final answer
    x = 559,359.52

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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.