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Finding the Fourth Proportional to 500,958.68, 691,350.80 and 286,168.55

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Solution

The fourth proportional to 500,958.68, 691,350.80 and 286,168.55 is: 394,928.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,958.68 : 691,350.80 = 286,168.55 : x
  2. Step 2: Convert to fraction form
    500,958.68/691,350.80 = 286,168.55/x
  3. Step 3: Cross multiply
    500,958.68x = 691,350.80 × 286,168.55
  4. Step 4: Simplify right side
    500,958.68x = 197,842,851,089.74
  5. Step 5: Solve for x
    x = 197,842,851,089.74/500,958.68
  6. Step 6: Final answer
    x = 394,928.49

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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.