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Finding the Fourth Proportional to 694,395.35, 958,243.55 and 388,477.08

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Solution

The fourth proportional to 694,395.35, 958,243.55 and 388,477.08 is: 536,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,395.35 : 958,243.55 = 388,477.08 : x
  2. Step 2: Convert to fraction form
    694,395.35/958,243.55 = 388,477.08/x
  3. Step 3: Cross multiply
    694,395.35x = 958,243.55 × 388,477.08
  4. Step 4: Simplify right side
    694,395.35x = 372,255,651,441.62
  5. Step 5: Solve for x
    x = 372,255,651,441.62/694,395.35
  6. Step 6: Final answer
    x = 536,086.04

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1.5x scale

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.