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Finding the Fourth Proportional to 694,468.40, 958,403.56 and 388,526.48

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Solution

The fourth proportional to 694,468.40, 958,403.56 and 388,526.48 is: 536,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,468.40 : 958,403.56 = 388,526.48 : x
  2. Step 2: Convert to fraction form
    694,468.40/958,403.56 = 388,526.48/x
  3. Step 3: Cross multiply
    694,468.40x = 958,403.56 × 388,526.48
  4. Step 4: Simplify right side
    694,468.40x = 372,365,161,586.27
  5. Step 5: Solve for x
    x = 372,365,161,586.27/694,468.40
  6. Step 6: Final answer
    x = 536,187.34

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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.