Home / 811,680.29-1,216,355.85-455,945.60

Finding the Fourth Proportional to 811,680.29, 1,216,355.85 and 455,945.60

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Solution

The fourth proportional to 811,680.29, 1,216,355.85 and 455,945.60 is: 683,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,680.29 : 1,216,355.85 = 455,945.60 : x
  2. Step 2: Convert to fraction form
    811,680.29/1,216,355.85 = 455,945.60/x
  3. Step 3: Cross multiply
    811,680.29x = 1,216,355.85 × 455,945.60
  4. Step 4: Simplify right side
    811,680.29x = 554,592,100,882.65
  5. Step 5: Solve for x
    x = 554,592,100,882.65/811,680.29
  6. Step 6: Final answer
    x = 683,264.23

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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.