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Finding the Fourth Proportional to 610,668.28, 842,722.95 and 356,068.68

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Solution

The fourth proportional to 610,668.28, 842,722.95 and 356,068.68 is: 491,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,668.28 : 842,722.95 = 356,068.68 : x
  2. Step 2: Convert to fraction form
    610,668.28/842,722.95 = 356,068.68/x
  3. Step 3: Cross multiply
    610,668.28x = 842,722.95 × 356,068.68
  4. Step 4: Simplify right side
    610,668.28x = 300,067,248,412.21
  5. Step 5: Solve for x
    x = 300,067,248,412.21/610,668.28
  6. Step 6: Final answer
    x = 491,375.20

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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.