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Finding the Fourth Proportional to 630,791.28, 870,508.44 and 344,337.84

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Solution

The fourth proportional to 630,791.28, 870,508.44 and 344,337.84 is: 475,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,791.28 : 870,508.44 = 344,337.84 : x
  2. Step 2: Convert to fraction form
    630,791.28/870,508.44 = 344,337.84/x
  3. Step 3: Cross multiply
    630,791.28x = 870,508.44 × 344,337.84
  4. Step 4: Simplify right side
    630,791.28x = 299,748,995,931.37
  5. Step 5: Solve for x
    x = 299,748,995,931.37/630,791.28
  6. Step 6: Final answer
    x = 475,195.21

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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.