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Finding the Fourth Proportional to 630,124.92, 869,563.20 and 343,644.36

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Solution

The fourth proportional to 630,124.92, 869,563.20 and 343,644.36 is: 474,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,124.92 : 869,563.20 = 343,644.36 : x
  2. Step 2: Convert to fraction form
    630,124.92/869,563.20 = 343,644.36/x
  3. Step 3: Cross multiply
    630,124.92x = 869,563.20 × 343,644.36
  4. Step 4: Simplify right side
    630,124.92x = 298,820,489,343.55
  5. Step 5: Solve for x
    x = 298,820,489,343.55/630,124.92
  6. Step 6: Final answer
    x = 474,224.21

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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.