Home / 679,143.24-1,018,918.56-274,127.04

Finding the Fourth Proportional to 679,143.24, 1,018,918.56 and 274,127.04

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Solution

The fourth proportional to 679,143.24, 1,018,918.56 and 274,127.04 is: 411,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,143.24 : 1,018,918.56 = 274,127.04 : x
  2. Step 2: Convert to fraction form
    679,143.24/1,018,918.56 = 274,127.04/x
  3. Step 3: Cross multiply
    679,143.24x = 1,018,918.56 × 274,127.04
  4. Step 4: Simplify right side
    679,143.24x = 279,313,128,853.86
  5. Step 5: Solve for x
    x = 279,313,128,853.86/679,143.24
  6. Step 6: Final answer
    x = 411,272.78

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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.