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Finding the Fourth Proportional to 518,219.60, 775,573.62 and 318,666.36

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Solution

The fourth proportional to 518,219.60, 775,573.62 and 318,666.36 is: 476,919.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,219.60 : 775,573.62 = 318,666.36 : x
  2. Step 2: Convert to fraction form
    518,219.60/775,573.62 = 318,666.36/x
  3. Step 3: Cross multiply
    518,219.60x = 775,573.62 × 318,666.36
  4. Step 4: Simplify right side
    518,219.60x = 247,149,222,397.42
  5. Step 5: Solve for x
    x = 247,149,222,397.42/518,219.60
  6. Step 6: Final answer
    x = 476,919.87

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1.5x scale

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.