Home / 578,491.39-868,065.19-312,246.01

Finding the Fourth Proportional to 578,491.39, 868,065.19 and 312,246.01

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Solution

The fourth proportional to 578,491.39, 868,065.19 and 312,246.01 is: 468,546.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,491.39 : 868,065.19 = 312,246.01 : x
  2. Step 2: Convert to fraction form
    578,491.39/868,065.19 = 312,246.01/x
  3. Step 3: Cross multiply
    578,491.39x = 868,065.19 × 312,246.01
  4. Step 4: Simplify right side
    578,491.39x = 271,049,892,301.86
  5. Step 5: Solve for x
    x = 271,049,892,301.86/578,491.39
  6. Step 6: Final answer
    x = 468,546.11

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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.