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Finding the Fourth Proportional to 808,309.62, 1,115,494.22 and 440,806.88

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Solution

The fourth proportional to 808,309.62, 1,115,494.22 and 440,806.88 is: 608,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,309.62 : 1,115,494.22 = 440,806.88 : x
  2. Step 2: Convert to fraction form
    808,309.62/1,115,494.22 = 440,806.88/x
  3. Step 3: Cross multiply
    808,309.62x = 1,115,494.22 × 440,806.88
  4. Step 4: Simplify right side
    808,309.62x = 491,717,526,776.23
  5. Step 5: Solve for x
    x = 491,717,526,776.23/808,309.62
  6. Step 6: Final answer
    x = 608,328.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.