Home / 722,778.12-997,435.62-400,485.60

Finding the Fourth Proportional to 722,778.12, 997,435.62 and 400,485.60

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Solution

The fourth proportional to 722,778.12, 997,435.62 and 400,485.60 is: 552,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,778.12 : 997,435.62 = 400,485.60 : x
  2. Step 2: Convert to fraction form
    722,778.12/997,435.62 = 400,485.60/x
  3. Step 3: Cross multiply
    722,778.12x = 997,435.62 × 400,485.60
  4. Step 4: Simplify right side
    722,778.12x = 399,458,602,737.07
  5. Step 5: Solve for x
    x = 399,458,602,737.07/722,778.12
  6. Step 6: Final answer
    x = 552,671.13

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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.