Home / 694,335.12-958,137.20-388,358.48

Finding the Fourth Proportional to 694,335.12, 958,137.20 and 388,358.48

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Solution

The fourth proportional to 694,335.12, 958,137.20 and 388,358.48 is: 535,909.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,335.12 : 958,137.20 = 388,358.48 : x
  2. Step 2: Convert to fraction form
    694,335.12/958,137.20 = 388,358.48/x
  3. Step 3: Cross multiply
    694,335.12x = 958,137.20 × 388,358.48
  4. Step 4: Simplify right side
    694,335.12x = 372,100,706,623.46
  5. Step 5: Solve for x
    x = 372,100,706,623.46/694,335.12
  6. Step 6: Final answer
    x = 535,909.38

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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.