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Finding the Fourth Proportional to 586,589.30, 809,493.24 and 318,317.30

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Solution

The fourth proportional to 586,589.30, 809,493.24 and 318,317.30 is: 439,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,589.30 : 809,493.24 = 318,317.30 : x
  2. Step 2: Convert to fraction form
    586,589.30/809,493.24 = 318,317.30/x
  3. Step 3: Cross multiply
    586,589.30x = 809,493.24 × 318,317.30
  4. Step 4: Simplify right side
    586,589.30x = 257,675,702,525.05
  5. Step 5: Solve for x
    x = 257,675,702,525.05/586,589.30
  6. Step 6: Final answer
    x = 439,277.88

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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.