Home / 807,431.28-1,211,383.78-238,827.40

Finding the Fourth Proportional to 807,431.28, 1,211,383.78 and 238,827.40

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Solution

The fourth proportional to 807,431.28, 1,211,383.78 and 238,827.40 is: 358,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,431.28 : 1,211,383.78 = 238,827.40 : x
  2. Step 2: Convert to fraction form
    807,431.28/1,211,383.78 = 238,827.40/x
  3. Step 3: Cross multiply
    807,431.28x = 1,211,383.78 × 238,827.40
  4. Step 4: Simplify right side
    807,431.28x = 289,311,638,579.57
  5. Step 5: Solve for x
    x = 289,311,638,579.57/807,431.28
  6. Step 6: Final answer
    x = 358,311.16

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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.