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Finding the Fourth Proportional to 695,846.95, 960,308.60 and 390,022.14

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Solution

The fourth proportional to 695,846.95, 960,308.60 and 390,022.14 is: 538,252.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,846.95 : 960,308.60 = 390,022.14 : x
  2. Step 2: Convert to fraction form
    695,846.95/960,308.60 = 390,022.14/x
  3. Step 3: Cross multiply
    695,846.95x = 960,308.60 × 390,022.14
  4. Step 4: Simplify right side
    695,846.95x = 374,541,620,708.91
  5. Step 5: Solve for x
    x = 374,541,620,708.91/695,846.95
  6. Step 6: Final answer
    x = 538,252.88

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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.