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Finding the Fourth Proportional to 542,818.63, 812,940.85 and 430,136.52

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Solution

The fourth proportional to 542,818.63, 812,940.85 and 430,136.52 is: 644,184.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,818.63 : 812,940.85 = 430,136.52 : x
  2. Step 2: Convert to fraction form
    542,818.63/812,940.85 = 430,136.52/x
  3. Step 3: Cross multiply
    542,818.63x = 812,940.85 × 430,136.52
  4. Step 4: Simplify right side
    542,818.63x = 349,675,548,184.84
  5. Step 5: Solve for x
    x = 349,675,548,184.84/542,818.63
  6. Step 6: Final answer
    x = 644,184.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.