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Finding the Fourth Proportional to 806,879.20, 1,210,318.80 and 452,984.80

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Solution

The fourth proportional to 806,879.20, 1,210,318.80 and 452,984.80 is: 679,477.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,879.20 : 1,210,318.80 = 452,984.80 : x
  2. Step 2: Convert to fraction form
    806,879.20/1,210,318.80 = 452,984.80/x
  3. Step 3: Cross multiply
    806,879.20x = 1,210,318.80 × 452,984.80
  4. Step 4: Simplify right side
    806,879.20x = 548,256,019,554.24
  5. Step 5: Solve for x
    x = 548,256,019,554.24/806,879.20
  6. Step 6: Final answer
    x = 679,477.20

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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.