Home / 800,983.28-1,105,310.10-438,413.92

Finding the Fourth Proportional to 800,983.28, 1,105,310.10 and 438,413.92

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Solution

The fourth proportional to 800,983.28, 1,105,310.10 and 438,413.92 is: 604,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,983.28 : 1,105,310.10 = 438,413.92 : x
  2. Step 2: Convert to fraction form
    800,983.28/1,105,310.10 = 438,413.92/x
  3. Step 3: Cross multiply
    800,983.28x = 1,105,310.10 × 438,413.92
  4. Step 4: Simplify right side
    800,983.28x = 484,583,332,637.37
  5. Step 5: Solve for x
    x = 484,583,332,637.37/800,983.28
  6. Step 6: Final answer
    x = 604,985.58

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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.