Home / 919,947.20-1,379,920.80-868,625.60

Finding the Fourth Proportional to 919,947.20, 1,379,920.80 and 868,625.60

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Solution

The fourth proportional to 919,947.20, 1,379,920.80 and 868,625.60 is: 1,302,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,947.20 : 1,379,920.80 = 868,625.60 : x
  2. Step 2: Convert to fraction form
    919,947.20/1,379,920.80 = 868,625.60/x
  3. Step 3: Cross multiply
    919,947.20x = 1,379,920.80 × 868,625.60
  4. Step 4: Simplify right side
    919,947.20x = 1,198,634,532,852.48
  5. Step 5: Solve for x
    x = 1,198,634,532,852.48/919,947.20
  6. Step 6: Final answer
    x = 1,302,938.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.