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Finding the Fourth Proportional to 545,564.16, 752,855.04 and 394,398.72

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Solution

The fourth proportional to 545,564.16, 752,855.04 and 394,398.72 is: 544,253.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,564.16 : 752,855.04 = 394,398.72 : x
  2. Step 2: Convert to fraction form
    545,564.16/752,855.04 = 394,398.72/x
  3. Step 3: Cross multiply
    545,564.16x = 752,855.04 × 394,398.72
  4. Step 4: Simplify right side
    545,564.16x = 296,925,064,121.55
  5. Step 5: Solve for x
    x = 296,925,064,121.55/545,564.16
  6. Step 6: Final answer
    x = 544,253.24

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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.