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Finding the Fourth Proportional to 722,571.54, 997,117.89 and 400,295.22

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Solution

The fourth proportional to 722,571.54, 997,117.89 and 400,295.22 is: 552,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,571.54 : 997,117.89 = 400,295.22 : x
  2. Step 2: Convert to fraction form
    722,571.54/997,117.89 = 400,295.22/x
  3. Step 3: Cross multiply
    722,571.54x = 997,117.89 × 400,295.22
  4. Step 4: Simplify right side
    722,571.54x = 399,141,525,143.49
  5. Step 5: Solve for x
    x = 399,141,525,143.49/722,571.54
  6. Step 6: Final answer
    x = 552,390.32

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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.