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Finding the Fourth Proportional to 625,722.56, 864,209.76 and 424,168.64

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Solution

The fourth proportional to 625,722.56, 864,209.76 and 424,168.64 is: 585,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,722.56 : 864,209.76 = 424,168.64 : x
  2. Step 2: Convert to fraction form
    625,722.56/864,209.76 = 424,168.64/x
  3. Step 3: Cross multiply
    625,722.56x = 864,209.76 × 424,168.64
  4. Step 4: Simplify right side
    625,722.56x = 366,570,678,573.93
  5. Step 5: Solve for x
    x = 366,570,678,573.93/625,722.56
  6. Step 6: Final answer
    x = 585,835.80

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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.