Home / 919,986.40-1,377,355.20-815,010.40

Finding the Fourth Proportional to 919,986.40, 1,377,355.20 and 815,010.40

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Solution

The fourth proportional to 919,986.40, 1,377,355.20 and 815,010.40 is: 1,220,190.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,986.40 : 1,377,355.20 = 815,010.40 : x
  2. Step 2: Convert to fraction form
    919,986.40/1,377,355.20 = 815,010.40/x
  3. Step 3: Cross multiply
    919,986.40x = 1,377,355.20 × 815,010.40
  4. Step 4: Simplify right side
    919,986.40x = 1,122,558,812,494.08
  5. Step 5: Solve for x
    x = 1,122,558,812,494.08/919,986.40
  6. Step 6: Final answer
    x = 1,220,190.66

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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.