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Finding the Fourth Proportional to 661,910.72, 913,407.98 and 367,542.12

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Solution

The fourth proportional to 661,910.72, 913,407.98 and 367,542.12 is: 507,192.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,910.72 : 913,407.98 = 367,542.12 : x
  2. Step 2: Convert to fraction form
    661,910.72/913,407.98 = 367,542.12/x
  3. Step 3: Cross multiply
    661,910.72x = 913,407.98 × 367,542.12
  4. Step 4: Simplify right side
    661,910.72x = 335,715,905,394.12
  5. Step 5: Solve for x
    x = 335,715,905,394.12/661,910.72
  6. Step 6: Final answer
    x = 507,192.13

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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.