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Finding the Fourth Proportional to 555,627.46, 766,766.04 and 300,978.70

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Solution

The fourth proportional to 555,627.46, 766,766.04 and 300,978.70 is: 415,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,627.46 : 766,766.04 = 300,978.70 : x
  2. Step 2: Convert to fraction form
    555,627.46/766,766.04 = 300,978.70/x
  3. Step 3: Cross multiply
    555,627.46x = 766,766.04 × 300,978.70
  4. Step 4: Simplify right side
    555,627.46x = 230,780,245,923.35
  5. Step 5: Solve for x
    x = 230,780,245,923.35/555,627.46
  6. Step 6: Final answer
    x = 415,350.68

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1.5x scale

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.