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Finding the Fourth Proportional to 611,326.20, 843,613.72 and 366,449.28

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Solution

The fourth proportional to 611,326.20, 843,613.72 and 366,449.28 is: 505,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,326.20 : 843,613.72 = 366,449.28 : x
  2. Step 2: Convert to fraction form
    611,326.20/843,613.72 = 366,449.28/x
  3. Step 3: Cross multiply
    611,326.20x = 843,613.72 × 366,449.28
  4. Step 4: Simplify right side
    611,326.20x = 309,141,640,292.12
  5. Step 5: Solve for x
    x = 309,141,640,292.12/611,326.20
  6. Step 6: Final answer
    x = 505,690.15

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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.