Home / 819,788.34-1,131,309.92-457,235.69

Finding the Fourth Proportional to 819,788.34, 1,131,309.92 and 457,235.69

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Solution

The fourth proportional to 819,788.34, 1,131,309.92 and 457,235.69 is: 630,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,788.34 : 1,131,309.92 = 457,235.69 : x
  2. Step 2: Convert to fraction form
    819,788.34/1,131,309.92 = 457,235.69/x
  3. Step 3: Cross multiply
    819,788.34x = 1,131,309.92 × 457,235.69
  4. Step 4: Simplify right side
    819,788.34x = 517,275,263,932.32
  5. Step 5: Solve for x
    x = 517,275,263,932.32/819,788.34
  6. Step 6: Final answer
    x = 630,986.36

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1.5x scale

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.