Home / 826,422.56-1,240,298.04-427,180.28

Finding the Fourth Proportional to 826,422.56, 1,240,298.04 and 427,180.28

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Solution

The fourth proportional to 826,422.56, 1,240,298.04 and 427,180.28 is: 641,113.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,422.56 : 1,240,298.04 = 427,180.28 : x
  2. Step 2: Convert to fraction form
    826,422.56/1,240,298.04 = 427,180.28/x
  3. Step 3: Cross multiply
    826,422.56x = 1,240,298.04 × 427,180.28
  4. Step 4: Simplify right side
    826,422.56x = 529,830,864,010.65
  5. Step 5: Solve for x
    x = 529,830,864,010.65/826,422.56
  6. Step 6: Final answer
    x = 641,113.75

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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.