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Finding the Fourth Proportional to 625,690.50, 864,165.69 and 424,136.58

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Solution

The fourth proportional to 625,690.50, 864,165.69 and 424,136.58 is: 585,791.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,690.50 : 864,165.69 = 424,136.58 : x
  2. Step 2: Convert to fraction form
    625,690.50/864,165.69 = 424,136.58/x
  3. Step 3: Cross multiply
    625,690.50x = 864,165.69 × 424,136.58
  4. Step 4: Simplify right side
    625,690.50x = 366,524,280,309.94
  5. Step 5: Solve for x
    x = 366,524,280,309.94/625,690.50
  6. Step 6: Final answer
    x = 585,791.67

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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.