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Finding the Fourth Proportional to 559,238.70, 771,829.92 and 404,691.78

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Solution

The fourth proportional to 559,238.70, 771,829.92 and 404,691.78 is: 558,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,238.70 : 771,829.92 = 404,691.78 : x
  2. Step 2: Convert to fraction form
    559,238.70/771,829.92 = 404,691.78/x
  3. Step 3: Cross multiply
    559,238.70x = 771,829.92 × 404,691.78
  4. Step 4: Simplify right side
    559,238.70x = 312,353,224,182.06
  5. Step 5: Solve for x
    x = 312,353,224,182.06/559,238.70
  6. Step 6: Final answer
    x = 558,532.92

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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.