Home / 579,340.85-869,251.32-312,788.07

Finding the Fourth Proportional to 579,340.85, 869,251.32 and 312,788.07

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Solution

The fourth proportional to 579,340.85, 869,251.32 and 312,788.07 is: 469,311.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,340.85 : 869,251.32 = 312,788.07 : x
  2. Step 2: Convert to fraction form
    579,340.85/869,251.32 = 312,788.07/x
  3. Step 3: Cross multiply
    579,340.85x = 869,251.32 × 312,788.07
  4. Step 4: Simplify right side
    579,340.85x = 271,891,442,727.75
  5. Step 5: Solve for x
    x = 271,891,442,727.75/579,340.85
  6. Step 6: Final answer
    x = 469,311.71

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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.