Home / 1,326,625.20-1,990,328.22-428,050.08

Finding the Fourth Proportional to 1,326,625.20, 1,990,328.22 and 428,050.08

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Solution

The fourth proportional to 1,326,625.20, 1,990,328.22 and 428,050.08 is: 642,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,625.20 : 1,990,328.22 = 428,050.08 : x
  2. Step 2: Convert to fraction form
    1,326,625.20/1,990,328.22 = 428,050.08/x
  3. Step 3: Cross multiply
    1,326,625.20x = 1,990,328.22 × 428,050.08
  4. Step 4: Simplify right side
    1,326,625.20x = 851,960,153,797.26
  5. Step 5: Solve for x
    x = 851,960,153,797.26/1,326,625.20
  6. Step 6: Final answer
    x = 642,201.09

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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.