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Finding the Fourth Proportional to 722,593.80, 997,106.78 and 400,243.67

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Solution

The fourth proportional to 722,593.80, 997,106.78 and 400,243.67 is: 552,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,593.80 : 997,106.78 = 400,243.67 : x
  2. Step 2: Convert to fraction form
    722,593.80/997,106.78 = 400,243.67/x
  3. Step 3: Cross multiply
    722,593.80x = 997,106.78 × 400,243.67
  4. Step 4: Simplify right side
    722,593.80x = 399,085,673,954.02
  5. Step 5: Solve for x
    x = 399,085,673,954.02/722,593.80
  6. Step 6: Final answer
    x = 552,296.01

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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.