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Finding the Fourth Proportional to 630,790.76, 870,494.82 and 344,304.56

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Solution

The fourth proportional to 630,790.76, 870,494.82 and 344,304.56 is: 475,142.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,790.76 : 870,494.82 = 344,304.56 : x
  2. Step 2: Convert to fraction form
    630,790.76/870,494.82 = 344,304.56/x
  3. Step 3: Cross multiply
    630,790.76x = 870,494.82 × 344,304.56
  4. Step 4: Simplify right side
    630,790.76x = 299,715,335,982.38
  5. Step 5: Solve for x
    x = 299,715,335,982.38/630,790.76
  6. Step 6: Final answer
    x = 475,142.24

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1.5x scale

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.