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Finding the Fourth Proportional to 694,491.95, 958,436.01 and 388,550.01

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Solution

The fourth proportional to 694,491.95, 958,436.01 and 388,550.01 is: 536,219.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,491.95 : 958,436.01 = 388,550.01 : x
  2. Step 2: Convert to fraction form
    694,491.95/958,436.01 = 388,550.01/x
  3. Step 3: Cross multiply
    694,491.95x = 958,436.01 × 388,550.01
  4. Step 4: Simplify right side
    694,491.95x = 372,400,323,224.80
  5. Step 5: Solve for x
    x = 372,400,323,224.80/694,491.95
  6. Step 6: Final answer
    x = 536,219.78

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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.