Home / 691,788.16-954,667.64-389,982.16

Finding the Fourth Proportional to 691,788.16, 954,667.64 and 389,982.16

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Solution

The fourth proportional to 691,788.16, 954,667.64 and 389,982.16 is: 538,175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,788.16 : 954,667.64 = 389,982.16 : x
  2. Step 2: Convert to fraction form
    691,788.16/954,667.64 = 389,982.16/x
  3. Step 3: Cross multiply
    691,788.16x = 954,667.64 × 389,982.16
  4. Step 4: Simplify right side
    691,788.16x = 372,303,348,329.30
  5. Step 5: Solve for x
    x = 372,303,348,329.30/691,788.16
  6. Step 6: Final answer
    x = 538,175.37

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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.