Home / 579,340.46-869,250.76-312,787.69

Finding the Fourth Proportional to 579,340.46, 869,250.76 and 312,787.69

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Solution

The fourth proportional to 579,340.46, 869,250.76 and 312,787.69 is: 469,311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,340.46 : 869,250.76 = 312,787.69 : x
  2. Step 2: Convert to fraction form
    579,340.46/869,250.76 = 312,787.69/x
  3. Step 3: Cross multiply
    579,340.46x = 869,250.76 × 312,787.69
  4. Step 4: Simplify right side
    579,340.46x = 271,890,934,296.05
  5. Step 5: Solve for x
    x = 271,890,934,296.05/579,340.46
  6. Step 6: Final answer
    x = 469,311.14

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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.