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Finding the Fourth Proportional to 694,726.32, 958,739.46 and 388,800.30

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Solution

The fourth proportional to 694,726.32, 958,739.46 and 388,800.30 is: 536,554.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,726.32 : 958,739.46 = 388,800.30 : x
  2. Step 2: Convert to fraction form
    694,726.32/958,739.46 = 388,800.30/x
  3. Step 3: Cross multiply
    694,726.32x = 958,739.46 × 388,800.30
  4. Step 4: Simplify right side
    694,726.32x = 372,758,189,669.84
  5. Step 5: Solve for x
    x = 372,758,189,669.84/694,726.32
  6. Step 6: Final answer
    x = 536,554.01

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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.