Home / 440,719.78-661,026.35-120,897.68

Finding the Fourth Proportional to 440,719.78, 661,026.35 and 120,897.68

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Solution

The fourth proportional to 440,719.78, 661,026.35 and 120,897.68 is: 181,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,719.78 : 661,026.35 = 120,897.68 : x
  2. Step 2: Convert to fraction form
    440,719.78/661,026.35 = 120,897.68/x
  3. Step 3: Cross multiply
    440,719.78x = 661,026.35 × 120,897.68
  4. Step 4: Simplify right side
    440,719.78x = 79,916,548,828.74
  5. Step 5: Solve for x
    x = 79,916,548,828.74/440,719.78
  6. Step 6: Final answer
    x = 181,331.89

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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.