Home / 920,022.40-1,377,409.20-815,046.40

Finding the Fourth Proportional to 920,022.40, 1,377,409.20 and 815,046.40

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Solution

The fourth proportional to 920,022.40, 1,377,409.20 and 815,046.40 is: 1,220,244.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,022.40 : 1,377,409.20 = 815,046.40 : x
  2. Step 2: Convert to fraction form
    920,022.40/1,377,409.20 = 815,046.40/x
  3. Step 3: Cross multiply
    920,022.40x = 1,377,409.20 × 815,046.40
  4. Step 4: Simplify right side
    920,022.40x = 1,122,652,409,786.88
  5. Step 5: Solve for x
    x = 1,122,652,409,786.88/920,022.40
  6. Step 6: Final answer
    x = 1,220,244.65

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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.