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Finding the Fourth Proportional to 630,874.52, 870,608.40 and 344,394.80

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Solution

The fourth proportional to 630,874.52, 870,608.40 and 344,394.80 is: 475,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,874.52 : 870,608.40 = 344,394.80 : x
  2. Step 2: Convert to fraction form
    630,874.52/870,608.40 = 344,394.80/x
  3. Step 3: Cross multiply
    630,874.52x = 870,608.40 × 344,394.80
  4. Step 4: Simplify right side
    630,874.52x = 299,833,005,796.32
  5. Step 5: Solve for x
    x = 299,833,005,796.32/630,874.52
  6. Step 6: Final answer
    x = 475,265.68

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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.