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Finding the Fourth Proportional to 538,800.75, 809,116.30 and 360,034.78

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Solution

The fourth proportional to 538,800.75, 809,116.30 and 360,034.78 is: 540,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,800.75 : 809,116.30 = 360,034.78 : x
  2. Step 2: Convert to fraction form
    538,800.75/809,116.30 = 360,034.78/x
  3. Step 3: Cross multiply
    538,800.75x = 809,116.30 × 360,034.78
  4. Step 4: Simplify right side
    538,800.75x = 291,310,009,064.91
  5. Step 5: Solve for x
    x = 291,310,009,064.91/538,800.75
  6. Step 6: Final answer
    x = 540,663.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.