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Finding the Fourth Proportional to 694,221.65, 958,114.60 and 388,315.03

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Solution

The fourth proportional to 694,221.65, 958,114.60 and 388,315.03 is: 535,924.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,221.65 : 958,114.60 = 388,315.03 : x
  2. Step 2: Convert to fraction form
    694,221.65/958,114.60 = 388,315.03/x
  3. Step 3: Cross multiply
    694,221.65x = 958,114.60 × 388,315.03
  4. Step 4: Simplify right side
    694,221.65x = 372,050,299,642.44
  5. Step 5: Solve for x
    x = 372,050,299,642.44/694,221.65
  6. Step 6: Final answer
    x = 535,924.37

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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.