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Finding the Fourth Proportional to 722,544.19, 997,171.76 and 400,284.27

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Solution

The fourth proportional to 722,544.19, 997,171.76 and 400,284.27 is: 552,425.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,544.19 : 997,171.76 = 400,284.27 : x
  2. Step 2: Convert to fraction form
    722,544.19/997,171.76 = 400,284.27/x
  3. Step 3: Cross multiply
    722,544.19x = 997,171.76 × 400,284.27
  4. Step 4: Simplify right side
    722,544.19x = 399,152,170,016.22
  5. Step 5: Solve for x
    x = 399,152,170,016.22/722,544.19
  6. Step 6: Final answer
    x = 552,425.96

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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.