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Finding the Fourth Proportional to 611,881.19, 917,506.64 and 274,632.73

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Solution

The fourth proportional to 611,881.19, 917,506.64 and 274,632.73 is: 411,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,881.19 : 917,506.64 = 274,632.73 : x
  2. Step 2: Convert to fraction form
    611,881.19/917,506.64 = 274,632.73/x
  3. Step 3: Cross multiply
    611,881.19x = 917,506.64 × 274,632.73
  4. Step 4: Simplify right side
    611,881.19x = 251,977,351,729.14
  5. Step 5: Solve for x
    x = 251,977,351,729.14/611,881.19
  6. Step 6: Final answer
    x = 411,807.65

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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.