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Finding the Fourth Proportional to 722,860.73, 997,522.71 and 400,600.81

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Solution

The fourth proportional to 722,860.73, 997,522.71 and 400,600.81 is: 552,815.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,860.73 : 997,522.71 = 400,600.81 : x
  2. Step 2: Convert to fraction form
    722,860.73/997,522.71 = 400,600.81/x
  3. Step 3: Cross multiply
    722,860.73x = 997,522.71 × 400,600.81
  4. Step 4: Simplify right side
    722,860.73x = 399,608,405,619.40
  5. Step 5: Solve for x
    x = 399,608,405,619.40/722,860.73
  6. Step 6: Final answer
    x = 552,815.21

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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.