Home / 1,288,145.43-1,932,280.29-423,561.21

Finding the Fourth Proportional to 1,288,145.43, 1,932,280.29 and 423,561.21

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Solution

The fourth proportional to 1,288,145.43, 1,932,280.29 and 423,561.21 is: 635,362.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,145.43 : 1,932,280.29 = 423,561.21 : x
  2. Step 2: Convert to fraction form
    1,288,145.43/1,932,280.29 = 423,561.21/x
  3. Step 3: Cross multiply
    1,288,145.43x = 1,932,280.29 × 423,561.21
  4. Step 4: Simplify right side
    1,288,145.43x = 818,438,981,314.58
  5. Step 5: Solve for x
    x = 818,438,981,314.58/1,288,145.43
  6. Step 6: Final answer
    x = 635,362.25

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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.