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Finding the Fourth Proportional to 630,535.77, 870,132.09 and 344,060.64

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Solution

The fourth proportional to 630,535.77, 870,132.09 and 344,060.64 is: 474,799.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,535.77 : 870,132.09 = 344,060.64 : x
  2. Step 2: Convert to fraction form
    630,535.77/870,132.09 = 344,060.64/x
  3. Step 3: Cross multiply
    630,535.77x = 870,132.09 × 344,060.64
  4. Step 4: Simplify right side
    630,535.77x = 299,378,203,769.94
  5. Step 5: Solve for x
    x = 299,378,203,769.94/630,535.77
  6. Step 6: Final answer
    x = 474,799.71

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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.