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Finding the Fourth Proportional to 768,118.87, 1,060,193.78 and 466,565.59

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Solution

The fourth proportional to 768,118.87, 1,060,193.78 and 466,565.59 is: 643,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,118.87 : 1,060,193.78 = 466,565.59 : x
  2. Step 2: Convert to fraction form
    768,118.87/1,060,193.78 = 466,565.59/x
  3. Step 3: Cross multiply
    768,118.87x = 1,060,193.78 × 466,565.59
  4. Step 4: Simplify right side
    768,118.87x = 494,649,936,480.03
  5. Step 5: Solve for x
    x = 494,649,936,480.03/768,118.87
  6. Step 6: Final answer
    x = 643,975.76

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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.