Home / 427,947.57-590,519.97-236,913.12

Finding the Fourth Proportional to 427,947.57, 590,519.97 and 236,913.12

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Solution

The fourth proportional to 427,947.57, 590,519.97 and 236,913.12 is: 326,913.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,947.57 : 590,519.97 = 236,913.12 : x
  2. Step 2: Convert to fraction form
    427,947.57/590,519.97 = 236,913.12/x
  3. Step 3: Cross multiply
    427,947.57x = 590,519.97 × 236,913.12
  4. Step 4: Simplify right side
    427,947.57x = 139,901,928,515.01
  5. Step 5: Solve for x
    x = 139,901,928,515.01/427,947.57
  6. Step 6: Final answer
    x = 326,913.71

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Double scale
Find fourth proportional to 427,948.57, 590,521.35 and 236,914.12
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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.