Home / 1,400,021.60-2,100,020.66-389,140.58

Finding the Fourth Proportional to 1,400,021.60, 2,100,020.66 and 389,140.58

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Solution

The fourth proportional to 1,400,021.60, 2,100,020.66 and 389,140.58 is: 583,707.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,021.60 : 2,100,020.66 = 389,140.58 : x
  2. Step 2: Convert to fraction form
    1,400,021.60/2,100,020.66 = 389,140.58/x
  3. Step 3: Cross multiply
    1,400,021.60x = 2,100,020.66 × 389,140.58
  4. Step 4: Simplify right side
    1,400,021.60x = 817,203,260,948.73
  5. Step 5: Solve for x
    x = 817,203,260,948.73/1,400,021.60
  6. Step 6: Final answer
    x = 583,707.61

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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.