Home / 1,435,806.72-1,981,387.52-782,438.40

Finding the Fourth Proportional to 1,435,806.72, 1,981,387.52 and 782,438.40

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Solution

The fourth proportional to 1,435,806.72, 1,981,387.52 and 782,438.40 is: 1,079,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435,806.72 : 1,981,387.52 = 782,438.40 : x
  2. Step 2: Convert to fraction form
    1,435,806.72/1,981,387.52 = 782,438.40/x
  3. Step 3: Cross multiply
    1,435,806.72x = 1,981,387.52 × 782,438.40
  4. Step 4: Simplify right side
    1,435,806.72x = 1,550,313,680,928.77
  5. Step 5: Solve for x
    x = 1,550,313,680,928.77/1,435,806.72
  6. Step 6: Final answer
    x = 1,079,750.96

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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.