Home / 430,658.31-645,987.66-193,724.16

Finding the Fourth Proportional to 430,658.31, 645,987.66 and 193,724.16

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Solution

The fourth proportional to 430,658.31, 645,987.66 and 193,724.16 is: 290,586.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,658.31 : 645,987.66 = 193,724.16 : x
  2. Step 2: Convert to fraction form
    430,658.31/645,987.66 = 193,724.16/x
  3. Step 3: Cross multiply
    430,658.31x = 645,987.66 × 193,724.16
  4. Step 4: Simplify right side
    430,658.31x = 125,143,416,803.87
  5. Step 5: Solve for x
    x = 125,143,416,803.87/430,658.31
  6. Step 6: Final answer
    x = 290,586.33

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Similar ratio
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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.