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Finding the Fourth Proportional to 545,491.68, 752,778.36 and 319,181.04

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Solution

The fourth proportional to 545,491.68, 752,778.36 and 319,181.04 is: 440,469.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,491.68 : 752,778.36 = 319,181.04 : x
  2. Step 2: Convert to fraction form
    545,491.68/752,778.36 = 319,181.04/x
  3. Step 3: Cross multiply
    545,491.68x = 752,778.36 × 319,181.04
  4. Step 4: Simplify right side
    545,491.68x = 240,272,579,834.29
  5. Step 5: Solve for x
    x = 240,272,579,834.29/545,491.68
  6. Step 6: Final answer
    x = 440,469.74

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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.