Home / 1,320,498.12-1,980,878.44-479,115.48

Finding the Fourth Proportional to 1,320,498.12, 1,980,878.44 and 479,115.48

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Solution

The fourth proportional to 1,320,498.12, 1,980,878.44 and 479,115.48 is: 718,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,498.12 : 1,980,878.44 = 479,115.48 : x
  2. Step 2: Convert to fraction form
    1,320,498.12/1,980,878.44 = 479,115.48/x
  3. Step 3: Cross multiply
    1,320,498.12x = 1,980,878.44 × 479,115.48
  4. Step 4: Simplify right side
    1,320,498.12x = 949,069,524,602.25
  5. Step 5: Solve for x
    x = 949,069,524,602.25/1,320,498.12
  6. Step 6: Final answer
    x = 718,720.84

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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.