Home / 826,856.80-1,240,285.20-721,880.80

Finding the Fourth Proportional to 826,856.80, 1,240,285.20 and 721,880.80

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Solution

The fourth proportional to 826,856.80, 1,240,285.20 and 721,880.80 is: 1,082,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,856.80 : 1,240,285.20 = 721,880.80 : x
  2. Step 2: Convert to fraction form
    826,856.80/1,240,285.20 = 721,880.80/x
  3. Step 3: Cross multiply
    826,856.80x = 1,240,285.20 × 721,880.80
  4. Step 4: Simplify right side
    826,856.80x = 895,338,072,404.16
  5. Step 5: Solve for x
    x = 895,338,072,404.16/826,856.80
  6. Step 6: Final answer
    x = 1,082,821.20

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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.