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Finding the Fourth Proportional to 808,375.60, 1,213,000.80 and 359,165.80

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Solution

The fourth proportional to 808,375.60, 1,213,000.80 and 359,165.80 is: 538,943.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,375.60 : 1,213,000.80 = 359,165.80 : x
  2. Step 2: Convert to fraction form
    808,375.60/1,213,000.80 = 359,165.80/x
  3. Step 3: Cross multiply
    808,375.60x = 1,213,000.80 × 359,165.80
  4. Step 4: Simplify right side
    808,375.60x = 435,668,402,732.64
  5. Step 5: Solve for x
    x = 435,668,402,732.64/808,375.60
  6. Step 6: Final answer
    x = 538,943.04

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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.