Home / 800,785.16-1,105,083.63-438,209.11

Finding the Fourth Proportional to 800,785.16, 1,105,083.63 and 438,209.11

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Solution

The fourth proportional to 800,785.16, 1,105,083.63 and 438,209.11 is: 604,728.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,785.16 : 1,105,083.63 = 438,209.11 : x
  2. Step 2: Convert to fraction form
    800,785.16/1,105,083.63 = 438,209.11/x
  3. Step 3: Cross multiply
    800,785.16x = 1,105,083.63 × 438,209.11
  4. Step 4: Simplify right side
    800,785.16x = 484,257,708,452.45
  5. Step 5: Solve for x
    x = 484,257,708,452.45/800,785.16
  6. Step 6: Final answer
    x = 604,728.62

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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.