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Finding the Fourth Proportional to 808,659.20, 1,213,426.20 and 335,392.40

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Solution

The fourth proportional to 808,659.20, 1,213,426.20 and 335,392.40 is: 503,270.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,659.20 : 1,213,426.20 = 335,392.40 : x
  2. Step 2: Convert to fraction form
    808,659.20/1,213,426.20 = 335,392.40/x
  3. Step 3: Cross multiply
    808,659.20x = 1,213,426.20 × 335,392.40
  4. Step 4: Simplify right side
    808,659.20x = 406,973,925,440.88
  5. Step 5: Solve for x
    x = 406,973,925,440.88/808,659.20
  6. Step 6: Final answer
    x = 503,270.01

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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.