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Finding the Fourth Proportional to 806,812.40, 1,208,375.40 and 475,036.40

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Solution

The fourth proportional to 806,812.40, 1,208,375.40 and 475,036.40 is: 711,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,812.40 : 1,208,375.40 = 475,036.40 : x
  2. Step 2: Convert to fraction form
    806,812.40/1,208,375.40 = 475,036.40/x
  3. Step 3: Cross multiply
    806,812.40x = 1,208,375.40 × 475,036.40
  4. Step 4: Simplify right side
    806,812.40x = 574,022,299,864.56
  5. Step 5: Solve for x
    x = 574,022,299,864.56/806,812.40
  6. Step 6: Final answer
    x = 711,469.36

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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.