Home / 1,117.11-1,674.36-423.33

Finding the Fourth Proportional to 1,117.11, 1,674.36 and 423.33

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Solution

The fourth proportional to 1,117.11, 1,674.36 and 423.33 is: 634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.11 : 1,674.36 = 423.33 : x
  2. Step 2: Convert to fraction form
    1,117.11/1,674.36 = 423.33/x
  3. Step 3: Cross multiply
    1,117.11x = 1,674.36 × 423.33
  4. Step 4: Simplify right side
    1,117.11x = 708,806.82
  5. Step 5: Solve for x
    x = 708,806.82/1,117.11
  6. Step 6: Final answer
    x = 634.50

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.