Home / 987,969.40-1,362,896.16-624,781.60

Finding the Fourth Proportional to 987,969.40, 1,362,896.16 and 624,781.60

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Solution

The fourth proportional to 987,969.40, 1,362,896.16 and 624,781.60 is: 861,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,969.40 : 1,362,896.16 = 624,781.60 : x
  2. Step 2: Convert to fraction form
    987,969.40/1,362,896.16 = 624,781.60/x
  3. Step 3: Cross multiply
    987,969.40x = 1,362,896.16 × 624,781.60
  4. Step 4: Simplify right side
    987,969.40x = 851,512,443,478.66
  5. Step 5: Solve for x
    x = 851,512,443,478.66/987,969.40
  6. Step 6: Final answer
    x = 861,881.39

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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.