Home / 1,207,421.40-1,811,132.10-853,127.40

Finding the Fourth Proportional to 1,207,421.40, 1,811,132.10 and 853,127.40

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Solution

The fourth proportional to 1,207,421.40, 1,811,132.10 and 853,127.40 is: 1,279,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,421.40 : 1,811,132.10 = 853,127.40 : x
  2. Step 2: Convert to fraction form
    1,207,421.40/1,811,132.10 = 853,127.40/x
  3. Step 3: Cross multiply
    1,207,421.40x = 1,811,132.10 × 853,127.40
  4. Step 4: Simplify right side
    1,207,421.40x = 1,545,126,419,529.54
  5. Step 5: Solve for x
    x = 1,545,126,419,529.54/1,207,421.40
  6. Step 6: Final answer
    x = 1,279,691.10

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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.