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Finding the Fourth Proportional to 611,894.20, 917,526.12 and 274,645.75

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Solution

The fourth proportional to 611,894.20, 917,526.12 and 274,645.75 is: 411,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,894.20 : 917,526.12 = 274,645.75 : x
  2. Step 2: Convert to fraction form
    611,894.20/917,526.12 = 274,645.75/x
  3. Step 3: Cross multiply
    611,894.20x = 917,526.12 × 274,645.75
  4. Step 4: Simplify right side
    611,894.20x = 251,994,649,371.99
  5. Step 5: Solve for x
    x = 251,994,649,371.99/611,894.20
  6. Step 6: Final answer
    x = 411,827.16

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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.