Home / 613,890.18-920,747.79-193,155.12

Finding the Fourth Proportional to 613,890.18, 920,747.79 and 193,155.12

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Solution

The fourth proportional to 613,890.18, 920,747.79 and 193,155.12 is: 289,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,890.18 : 920,747.79 = 193,155.12 : x
  2. Step 2: Convert to fraction form
    613,890.18/920,747.79 = 193,155.12/x
  3. Step 3: Cross multiply
    613,890.18x = 920,747.79 × 193,155.12
  4. Step 4: Simplify right side
    613,890.18x = 177,847,149,867.19
  5. Step 5: Solve for x
    x = 177,847,149,867.19/613,890.18
  6. Step 6: Final answer
    x = 289,705.16

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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.