Home / 921,494.11-1,271,667.81-513,621.85

Finding the Fourth Proportional to 921,494.11, 1,271,667.81 and 513,621.85

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Solution

The fourth proportional to 921,494.11, 1,271,667.81 and 513,621.85 is: 708,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,494.11 : 1,271,667.81 = 513,621.85 : x
  2. Step 2: Convert to fraction form
    921,494.11/1,271,667.81 = 513,621.85/x
  3. Step 3: Cross multiply
    921,494.11x = 1,271,667.81 × 513,621.85
  4. Step 4: Simplify right side
    921,494.11x = 653,156,370,589.54
  5. Step 5: Solve for x
    x = 653,156,370,589.54/921,494.11
  6. Step 6: Final answer
    x = 708,801.46

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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.