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Finding the Fourth Proportional to 611,886.25, 917,514.24 and 274,637.79

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Solution

The fourth proportional to 611,886.25, 917,514.24 and 274,637.79 is: 411,815.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,886.25 : 917,514.24 = 274,637.79 : x
  2. Step 2: Convert to fraction form
    611,886.25/917,514.24 = 274,637.79/x
  3. Step 3: Cross multiply
    611,886.25x = 917,514.24 × 274,637.79
  4. Step 4: Simplify right side
    611,886.25x = 251,984,082,137.24
  5. Step 5: Solve for x
    x = 251,984,082,137.24/611,886.25
  6. Step 6: Final answer
    x = 411,815.24

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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.