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Finding the Fourth Proportional to 643,833.28, 966,697.89 and 360,079.75

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Solution

The fourth proportional to 643,833.28, 966,697.89 and 360,079.75 is: 540,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,833.28 : 966,697.89 = 360,079.75 : x
  2. Step 2: Convert to fraction form
    643,833.28/966,697.89 = 360,079.75/x
  3. Step 3: Cross multiply
    643,833.28x = 966,697.89 × 360,079.75
  4. Step 4: Simplify right side
    643,833.28x = 348,088,334,556.73
  5. Step 5: Solve for x
    x = 348,088,334,556.73/643,833.28
  6. Step 6: Final answer
    x = 540,649.80

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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.