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Finding the Fourth Proportional to 554,065.32, 765,901.28 and 494,229

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Solution

The fourth proportional to 554,065.32, 765,901.28 and 494,229 is: 683,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,065.32 : 765,901.28 = 494,229 : x
  2. Step 2: Convert to fraction form
    554,065.32/765,901.28 = 494,229/x
  3. Step 3: Cross multiply
    554,065.32x = 765,901.28 × 494,229
  4. Step 4: Simplify right side
    554,065.32x = 378,530,623,713.12
  5. Step 5: Solve for x
    x = 378,530,623,713.12/554,065.32
  6. Step 6: Final answer
    x = 683,187.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.