Home / 1,380,816.77-1,905,511.77-768,956.13

Finding the Fourth Proportional to 1,380,816.77, 1,905,511.77 and 768,956.13

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Solution

The fourth proportional to 1,380,816.77, 1,905,511.77 and 768,956.13 is: 1,061,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,816.77 : 1,905,511.77 = 768,956.13 : x
  2. Step 2: Convert to fraction form
    1,380,816.77/1,905,511.77 = 768,956.13/x
  3. Step 3: Cross multiply
    1,380,816.77x = 1,905,511.77 × 768,956.13
  4. Step 4: Simplify right side
    1,380,816.77x = 1,465,254,956,328.65
  5. Step 5: Solve for x
    x = 1,465,254,956,328.65/1,380,816.77
  6. Step 6: Final answer
    x = 1,061,150.90

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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.