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Finding the Fourth Proportional to 694,807.30, 958,615.50 and 388,835.07

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Solution

The fourth proportional to 694,807.30, 958,615.50 and 388,835.07 is: 536,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,807.30 : 958,615.50 = 388,835.07 : x
  2. Step 2: Convert to fraction form
    694,807.30/958,615.50 = 388,835.07/x
  3. Step 3: Cross multiply
    694,807.30x = 958,615.50 × 388,835.07
  4. Step 4: Simplify right side
    694,807.30x = 372,743,325,045.59
  5. Step 5: Solve for x
    x = 372,743,325,045.59/694,807.30
  6. Step 6: Final answer
    x = 536,470.08

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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.