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Finding the Fourth Proportional to 808,833.60, 1,213,687.80 and 359,623.80

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Solution

The fourth proportional to 808,833.60, 1,213,687.80 and 359,623.80 is: 539,630.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,833.60 : 1,213,687.80 = 359,623.80 : x
  2. Step 2: Convert to fraction form
    808,833.60/1,213,687.80 = 359,623.80/x
  3. Step 3: Cross multiply
    808,833.60x = 1,213,687.80 × 359,623.80
  4. Step 4: Simplify right side
    808,833.60x = 436,471,018,649.64
  5. Step 5: Solve for x
    x = 436,471,018,649.64/808,833.60
  6. Step 6: Final answer
    x = 539,630.18

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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.