Home / 689,457.39-1,034,186.07-216,180.87

Finding the Fourth Proportional to 689,457.39, 1,034,186.07 and 216,180.87

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Solution

The fourth proportional to 689,457.39, 1,034,186.07 and 216,180.87 is: 324,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,457.39 : 1,034,186.07 = 216,180.87 : x
  2. Step 2: Convert to fraction form
    689,457.39/1,034,186.07 = 216,180.87/x
  3. Step 3: Cross multiply
    689,457.39x = 1,034,186.07 × 216,180.87
  4. Step 4: Simplify right side
    689,457.39x = 223,571,244,354.48
  5. Step 5: Solve for x
    x = 223,571,244,354.48/689,457.39
  6. Step 6: Final answer
    x = 324,271.30

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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.