Home / 1,284,509.40-1,926,180.90-485,525.40

Finding the Fourth Proportional to 1,284,509.40, 1,926,180.90 and 485,525.40

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Solution

The fourth proportional to 1,284,509.40, 1,926,180.90 and 485,525.40 is: 728,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,509.40 : 1,926,180.90 = 485,525.40 : x
  2. Step 2: Convert to fraction form
    1,284,509.40/1,926,180.90 = 485,525.40/x
  3. Step 3: Cross multiply
    1,284,509.40x = 1,926,180.90 × 485,525.40
  4. Step 4: Simplify right side
    1,284,509.40x = 935,209,751,944.86
  5. Step 5: Solve for x
    x = 935,209,751,944.86/1,284,509.40
  6. Step 6: Final answer
    x = 728,067.66

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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.