Home / 1,261,380.48-1,740,710.28-688,432.80

Finding the Fourth Proportional to 1,261,380.48, 1,740,710.28 and 688,432.80

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Solution

The fourth proportional to 1,261,380.48, 1,740,710.28 and 688,432.80 is: 950,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,380.48 : 1,740,710.28 = 688,432.80 : x
  2. Step 2: Convert to fraction form
    1,261,380.48/1,740,710.28 = 688,432.80/x
  3. Step 3: Cross multiply
    1,261,380.48x = 1,740,710.28 × 688,432.80
  4. Step 4: Simplify right side
    1,261,380.48x = 1,198,362,052,049.18
  5. Step 5: Solve for x
    x = 1,198,362,052,049.18/1,261,380.48
  6. Step 6: Final answer
    x = 950,040.11

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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.