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Finding the Fourth Proportional to 630,414.67, 870,044.82 and 351,040

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Solution

The fourth proportional to 630,414.67, 870,044.82 and 351,040 is: 484,475.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,414.67 : 870,044.82 = 351,040 : x
  2. Step 2: Convert to fraction form
    630,414.67/870,044.82 = 351,040/x
  3. Step 3: Cross multiply
    630,414.67x = 870,044.82 × 351,040
  4. Step 4: Simplify right side
    630,414.67x = 305,420,533,612.80
  5. Step 5: Solve for x
    x = 305,420,533,612.80/630,414.67
  6. Step 6: Final answer
    x = 484,475.61

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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.