Home / 819,784.30-1,131,304.34-457,231.64

Finding the Fourth Proportional to 819,784.30, 1,131,304.34 and 457,231.64

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Solution

The fourth proportional to 819,784.30, 1,131,304.34 and 457,231.64 is: 630,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,784.30 : 1,131,304.34 = 457,231.64 : x
  2. Step 2: Convert to fraction form
    819,784.30/1,131,304.34 = 457,231.64/x
  3. Step 3: Cross multiply
    819,784.30x = 1,131,304.34 × 457,231.64
  4. Step 4: Simplify right side
    819,784.30x = 517,268,138,717.32
  5. Step 5: Solve for x
    x = 517,268,138,717.32/819,784.30
  6. Step 6: Final answer
    x = 630,980.78

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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.