Home / 1,400,321.89-2,100,484.83-389,443.90

Finding the Fourth Proportional to 1,400,321.89, 2,100,484.83 and 389,443.90

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Solution

The fourth proportional to 1,400,321.89, 2,100,484.83 and 389,443.90 is: 584,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,321.89 : 2,100,484.83 = 389,443.90 : x
  2. Step 2: Convert to fraction form
    1,400,321.89/2,100,484.83 = 389,443.90/x
  3. Step 3: Cross multiply
    1,400,321.89x = 2,100,484.83 × 389,443.90
  4. Step 4: Simplify right side
    1,400,321.89x = 818,021,004,086.04
  5. Step 5: Solve for x
    x = 818,021,004,086.04/1,400,321.89
  6. Step 6: Final answer
    x = 584,166.40

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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.