Home / 923,879.20-1,386,337.20-391,309.60

Finding the Fourth Proportional to 923,879.20, 1,386,337.20 and 391,309.60

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Solution

The fourth proportional to 923,879.20, 1,386,337.20 and 391,309.60 is: 587,183.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,879.20 : 1,386,337.20 = 391,309.60 : x
  2. Step 2: Convert to fraction form
    923,879.20/1,386,337.20 = 391,309.60/x
  3. Step 3: Cross multiply
    923,879.20x = 1,386,337.20 × 391,309.60
  4. Step 4: Simplify right side
    923,879.20x = 542,487,055,197.12
  5. Step 5: Solve for x
    x = 542,487,055,197.12/923,879.20
  6. Step 6: Final answer
    x = 587,183.97

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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.