Home / 680,723.40-1,019,529.90-400,787.40

Finding the Fourth Proportional to 680,723.40, 1,019,529.90 and 400,787.40

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Solution

The fourth proportional to 680,723.40, 1,019,529.90 and 400,787.40 is: 600,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,723.40 : 1,019,529.90 = 400,787.40 : x
  2. Step 2: Convert to fraction form
    680,723.40/1,019,529.90 = 400,787.40/x
  3. Step 3: Cross multiply
    680,723.40x = 1,019,529.90 × 400,787.40
  4. Step 4: Simplify right side
    680,723.40x = 408,614,737,843.26
  5. Step 5: Solve for x
    x = 408,614,737,843.26/680,723.40
  6. Step 6: Final answer
    x = 600,265.45

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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.