Home / 827,490.40-1,240,069.20-511,007.20

Finding the Fourth Proportional to 827,490.40, 1,240,069.20 and 511,007.20

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Solution

The fourth proportional to 827,490.40, 1,240,069.20 and 511,007.20 is: 765,790.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,490.40 : 1,240,069.20 = 511,007.20 : x
  2. Step 2: Convert to fraction form
    827,490.40/1,240,069.20 = 511,007.20/x
  3. Step 3: Cross multiply
    827,490.40x = 1,240,069.20 × 511,007.20
  4. Step 4: Simplify right side
    827,490.40x = 633,684,289,698.24
  5. Step 5: Solve for x
    x = 633,684,289,698.24/827,490.40
  6. Step 6: Final answer
    x = 765,790.50

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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.