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Finding the Fourth Proportional to 611,694.70, 917,104.65 and 274,459.30

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Solution

The fourth proportional to 611,694.70, 917,104.65 and 274,459.30 is: 411,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,694.70 : 917,104.65 = 274,459.30 : x
  2. Step 2: Convert to fraction form
    611,694.70/917,104.65 = 274,459.30/x
  3. Step 3: Cross multiply
    611,694.70x = 917,104.65 × 274,459.30
  4. Step 4: Simplify right side
    611,694.70x = 251,707,900,265.75
  5. Step 5: Solve for x
    x = 251,707,900,265.75/611,694.70
  6. Step 6: Final answer
    x = 411,492.69

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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.