Home / 1,330,335.80-1,993,314.90-768,390.20

Finding the Fourth Proportional to 1,330,335.80, 1,993,314.90 and 768,390.20

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Solution

The fourth proportional to 1,330,335.80, 1,993,314.90 and 768,390.20 is: 1,151,321.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,335.80 : 1,993,314.90 = 768,390.20 : x
  2. Step 2: Convert to fraction form
    1,330,335.80/1,993,314.90 = 768,390.20/x
  3. Step 3: Cross multiply
    1,330,335.80x = 1,993,314.90 × 768,390.20
  4. Step 4: Simplify right side
    1,330,335.80x = 1,531,643,634,673.98
  5. Step 5: Solve for x
    x = 1,531,643,634,673.98/1,330,335.80
  6. Step 6: Final answer
    x = 1,151,321.07

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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.