Home / 819,704.15-1,131,189.52-457,128.41

Finding the Fourth Proportional to 819,704.15, 1,131,189.52 and 457,128.41

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Solution

The fourth proportional to 819,704.15, 1,131,189.52 and 457,128.41 is: 630,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,704.15 : 1,131,189.52 = 457,128.41 : x
  2. Step 2: Convert to fraction form
    819,704.15/1,131,189.52 = 457,128.41/x
  3. Step 3: Cross multiply
    819,704.15x = 1,131,189.52 × 457,128.41
  4. Step 4: Simplify right side
    819,704.15x = 517,098,864,400.62
  5. Step 5: Solve for x
    x = 517,098,864,400.62/819,704.15
  6. Step 6: Final answer
    x = 630,835.98

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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.