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Finding the Fourth Proportional to 808,670.80, 1,213,006.20 and 335,306.80

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Solution

The fourth proportional to 808,670.80, 1,213,006.20 and 335,306.80 is: 502,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,670.80 : 1,213,006.20 = 335,306.80 : x
  2. Step 2: Convert to fraction form
    808,670.80/1,213,006.20 = 335,306.80/x
  3. Step 3: Cross multiply
    808,670.80x = 1,213,006.20 × 335,306.80
  4. Step 4: Simplify right side
    808,670.80x = 406,729,227,302.16
  5. Step 5: Solve for x
    x = 406,729,227,302.16/808,670.80
  6. Step 6: Final answer
    x = 502,960.20

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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.