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Finding the Fourth Proportional to 558,663.99, 771,039.30 and 329,147.90

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Solution

The fourth proportional to 558,663.99, 771,039.30 and 329,147.90 is: 454,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,663.99 : 771,039.30 = 329,147.90 : x
  2. Step 2: Convert to fraction form
    558,663.99/771,039.30 = 329,147.90/x
  3. Step 3: Cross multiply
    558,663.99x = 771,039.30 × 329,147.90
  4. Step 4: Simplify right side
    558,663.99x = 253,785,971,020.07
  5. Step 5: Solve for x
    x = 253,785,971,020.07/558,663.99
  6. Step 6: Final answer
    x = 454,273.01

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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.