Home / 1,421,650.40-2,128,328.40-1,272,351.20

Finding the Fourth Proportional to 1,421,650.40, 2,128,328.40 and 1,272,351.20

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Solution

The fourth proportional to 1,421,650.40, 2,128,328.40 and 1,272,351.20 is: 1,904,815.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,650.40 : 2,128,328.40 = 1,272,351.20 : x
  2. Step 2: Convert to fraction form
    1,421,650.40/2,128,328.40 = 1,272,351.20/x
  3. Step 3: Cross multiply
    1,421,650.40x = 2,128,328.40 × 1,272,351.20
  4. Step 4: Simplify right side
    1,421,650.40x = 2,707,981,193,734.08
  5. Step 5: Solve for x
    x = 2,707,981,193,734.08/1,421,650.40
  6. Step 6: Final answer
    x = 1,904,815.13

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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.