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Finding the Fourth Proportional to 690,727.39, 946,300.01 and 664,840.15

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Solution

The fourth proportional to 690,727.39, 946,300.01 and 664,840.15 is: 910,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,727.39 : 946,300.01 = 664,840.15 : x
  2. Step 2: Convert to fraction form
    690,727.39/946,300.01 = 664,840.15/x
  3. Step 3: Cross multiply
    690,727.39x = 946,300.01 × 664,840.15
  4. Step 4: Simplify right side
    690,727.39x = 629,138,240,593.40
  5. Step 5: Solve for x
    x = 629,138,240,593.40/690,727.39
  6. Step 6: Final answer
    x = 910,834.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.