Home / 1,079,881.20-1,619,821.80-869,929.20

Finding the Fourth Proportional to 1,079,881.20, 1,619,821.80 and 869,929.20

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Solution

The fourth proportional to 1,079,881.20, 1,619,821.80 and 869,929.20 is: 1,304,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,881.20 : 1,619,821.80 = 869,929.20 : x
  2. Step 2: Convert to fraction form
    1,079,881.20/1,619,821.80 = 869,929.20/x
  3. Step 3: Cross multiply
    1,079,881.20x = 1,619,821.80 × 869,929.20
  4. Step 4: Simplify right side
    1,079,881.20x = 1,409,130,282,616.56
  5. Step 5: Solve for x
    x = 1,409,130,282,616.56/1,079,881.20
  6. Step 6: Final answer
    x = 1,304,893.80

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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.