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Finding the Fourth Proportional to 808,632.80, 1,213,240.80 and 335,463.20

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Solution

The fourth proportional to 808,632.80, 1,213,240.80 and 335,463.20 is: 503,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,632.80 : 1,213,240.80 = 335,463.20 : x
  2. Step 2: Convert to fraction form
    808,632.80/1,213,240.80 = 335,463.20/x
  3. Step 3: Cross multiply
    808,632.80x = 1,213,240.80 × 335,463.20
  4. Step 4: Simplify right side
    808,632.80x = 406,997,641,138.56
  5. Step 5: Solve for x
    x = 406,997,641,138.56/808,632.80
  6. Step 6: Final answer
    x = 503,315.77

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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.