Home / 1,432,475.40-1,976,853.42-787,912.50

Finding the Fourth Proportional to 1,432,475.40, 1,976,853.42 and 787,912.50

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Solution

The fourth proportional to 1,432,475.40, 1,976,853.42 and 787,912.50 is: 1,087,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,475.40 : 1,976,853.42 = 787,912.50 : x
  2. Step 2: Convert to fraction form
    1,432,475.40/1,976,853.42 = 787,912.50/x
  3. Step 3: Cross multiply
    1,432,475.40x = 1,976,853.42 × 787,912.50
  4. Step 4: Simplify right side
    1,432,475.40x = 1,557,587,520,285.75
  5. Step 5: Solve for x
    x = 1,557,587,520,285.75/1,432,475.40
  6. Step 6: Final answer
    x = 1,087,339.80

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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.