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Finding the Fourth Proportional to 630,651.54, 870,301.56 and 344,178

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Solution

The fourth proportional to 630,651.54, 870,301.56 and 344,178 is: 474,966.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,651.54 : 870,301.56 = 344,178 : x
  2. Step 2: Convert to fraction form
    630,651.54/870,301.56 = 344,178/x
  3. Step 3: Cross multiply
    630,651.54x = 870,301.56 × 344,178
  4. Step 4: Simplify right side
    630,651.54x = 299,538,650,317.68
  5. Step 5: Solve for x
    x = 299,538,650,317.68/630,651.54
  6. Step 6: Final answer
    x = 474,966.97

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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.