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Finding the Fourth Proportional to 549,626.80, 758,105.56 and 386,628.88

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Solution

The fourth proportional to 549,626.80, 758,105.56 and 386,628.88 is: 533,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,626.80 : 758,105.56 = 386,628.88 : x
  2. Step 2: Convert to fraction form
    549,626.80/758,105.56 = 386,628.88/x
  3. Step 3: Cross multiply
    549,626.80x = 758,105.56 × 386,628.88
  4. Step 4: Simplify right side
    549,626.80x = 293,105,503,584.57
  5. Step 5: Solve for x
    x = 293,105,503,584.57/549,626.80
  6. Step 6: Final answer
    x = 533,280.95

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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.