Home / 721,308.29-1,082,334.98-316,784.62

Finding the Fourth Proportional to 721,308.29, 1,082,334.98 and 316,784.62

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Solution

The fourth proportional to 721,308.29, 1,082,334.98 and 316,784.62 is: 475,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,308.29 : 1,082,334.98 = 316,784.62 : x
  2. Step 2: Convert to fraction form
    721,308.29/1,082,334.98 = 316,784.62/x
  3. Step 3: Cross multiply
    721,308.29x = 1,082,334.98 × 316,784.62
  4. Step 4: Simplify right side
    721,308.29x = 342,867,073,438.13
  5. Step 5: Solve for x
    x = 342,867,073,438.13/721,308.29
  6. Step 6: Final answer
    x = 475,340.54

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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.