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Finding the Fourth Proportional to 630,716.62, 870,376.60 and 344,238.76

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Solution

The fourth proportional to 630,716.62, 870,376.60 and 344,238.76 is: 475,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,716.62 : 870,376.60 = 344,238.76 : x
  2. Step 2: Convert to fraction form
    630,716.62/870,376.60 = 344,238.76/x
  3. Step 3: Cross multiply
    630,716.62x = 870,376.60 × 344,238.76
  4. Step 4: Simplify right side
    630,716.62x = 299,617,361,517.02
  5. Step 5: Solve for x
    x = 299,617,361,517.02/630,716.62
  6. Step 6: Final answer
    x = 475,042.76

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Double scale
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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.