Home / 1,015,280.78-1,400,936.10-628,485.26

Finding the Fourth Proportional to 1,015,280.78, 1,400,936.10 and 628,485.26

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Solution

The fourth proportional to 1,015,280.78, 1,400,936.10 and 628,485.26 is: 867,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,280.78 : 1,400,936.10 = 628,485.26 : x
  2. Step 2: Convert to fraction form
    1,015,280.78/1,400,936.10 = 628,485.26/x
  3. Step 3: Cross multiply
    1,015,280.78x = 1,400,936.10 × 628,485.26
  4. Step 4: Simplify right side
    1,015,280.78x = 880,467,692,554.23
  5. Step 5: Solve for x
    x = 880,467,692,554.23/1,015,280.78
  6. Step 6: Final answer
    x = 867,215.95

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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.