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Finding the Fourth Proportional to 630,353.90, 869,887.20 and 343,873.96

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Solution

The fourth proportional to 630,353.90, 869,887.20 and 343,873.96 is: 474,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,353.90 : 869,887.20 = 343,873.96 : x
  2. Step 2: Convert to fraction form
    630,353.90/869,887.20 = 343,873.96/x
  3. Step 3: Cross multiply
    630,353.90x = 869,887.20 × 343,873.96
  4. Step 4: Simplify right side
    630,353.90x = 299,131,553,397.83
  5. Step 5: Solve for x
    x = 299,131,553,397.83/630,353.90
  6. Step 6: Final answer
    x = 474,545.42

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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.