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Finding the Fourth Proportional to 554,932.62, 765,809.64 and 313,225.38

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Solution

The fourth proportional to 554,932.62, 765,809.64 and 313,225.38 is: 432,252.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,932.62 : 765,809.64 = 313,225.38 : x
  2. Step 2: Convert to fraction form
    554,932.62/765,809.64 = 313,225.38/x
  3. Step 3: Cross multiply
    554,932.62x = 765,809.64 × 313,225.38
  4. Step 4: Simplify right side
    554,932.62x = 239,871,015,496.66
  5. Step 5: Solve for x
    x = 239,871,015,496.66/554,932.62
  6. Step 6: Final answer
    x = 432,252.51

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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.