Home / 1,380,791.45-1,905,439.05-768,970.00

Finding the Fourth Proportional to 1,380,791.45, 1,905,439.05 and 768,970.00

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Solution

The fourth proportional to 1,380,791.45, 1,905,439.05 and 768,970.00 is: 1,061,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,791.45 : 1,905,439.05 = 768,970.00 : x
  2. Step 2: Convert to fraction form
    1,380,791.45/1,905,439.05 = 768,970.00/x
  3. Step 3: Cross multiply
    1,380,791.45x = 1,905,439.05 × 768,970.00
  4. Step 4: Simplify right side
    1,380,791.45x = 1,465,225,461,514.90
  5. Step 5: Solve for x
    x = 1,465,225,461,514.90/1,380,791.45
  6. Step 6: Final answer
    x = 1,061,149.00

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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.