Home / 1,432,849.60-1,977,348.81-820,990

Finding the Fourth Proportional to 1,432,849.60, 1,977,348.81 and 820,990

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Solution

The fourth proportional to 1,432,849.60, 1,977,348.81 and 820,990 is: 1,132,975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,849.60 : 1,977,348.81 = 820,990 : x
  2. Step 2: Convert to fraction form
    1,432,849.60/1,977,348.81 = 820,990/x
  3. Step 3: Cross multiply
    1,432,849.60x = 1,977,348.81 × 820,990
  4. Step 4: Simplify right side
    1,432,849.60x = 1,623,383,599,521.90
  5. Step 5: Solve for x
    x = 1,623,383,599,521.90/1,432,849.60
  6. Step 6: Final answer
    x = 1,132,975.58

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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.