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Finding the Fourth Proportional to 722,477.52, 996,975.12 and 400,168.80

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Solution

The fourth proportional to 722,477.52, 996,975.12 and 400,168.80 is: 552,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,477.52 : 996,975.12 = 400,168.80 : x
  2. Step 2: Convert to fraction form
    722,477.52/996,975.12 = 400,168.80/x
  3. Step 3: Cross multiply
    722,477.52x = 996,975.12 × 400,168.80
  4. Step 4: Simplify right side
    722,477.52x = 398,958,337,400.26
  5. Step 5: Solve for x
    x = 398,958,337,400.26/722,477.52
  6. Step 6: Final answer
    x = 552,208.65

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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.