Home / 1,288,200.30-1,932,300.45-1,054,920.30

Finding the Fourth Proportional to 1,288,200.30, 1,932,300.45 and 1,054,920.30

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Solution

The fourth proportional to 1,288,200.30, 1,932,300.45 and 1,054,920.30 is: 1,582,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,200.30 : 1,932,300.45 = 1,054,920.30 : x
  2. Step 2: Convert to fraction form
    1,288,200.30/1,932,300.45 = 1,054,920.30/x
  3. Step 3: Cross multiply
    1,288,200.30x = 1,932,300.45 × 1,054,920.30
  4. Step 4: Simplify right side
    1,288,200.30x = 2,038,422,970,404.14
  5. Step 5: Solve for x
    x = 2,038,422,970,404.14/1,288,200.30
  6. Step 6: Final answer
    x = 1,582,380.45

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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.