Home / 826,640.20-1,239,960.30-265,731.40

Finding the Fourth Proportional to 826,640.20, 1,239,960.30 and 265,731.40

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Solution

The fourth proportional to 826,640.20, 1,239,960.30 and 265,731.40 is: 398,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,640.20 : 1,239,960.30 = 265,731.40 : x
  2. Step 2: Convert to fraction form
    826,640.20/1,239,960.30 = 265,731.40/x
  3. Step 3: Cross multiply
    826,640.20x = 1,239,960.30 × 265,731.40
  4. Step 4: Simplify right side
    826,640.20x = 329,496,386,463.42
  5. Step 5: Solve for x
    x = 329,496,386,463.42/826,640.20
  6. Step 6: Final answer
    x = 398,597.10

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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.