Home / 1,916,933.30-2,872,762.45-821,406.68

Finding the Fourth Proportional to 1,916,933.30, 2,872,762.45 and 821,406.68

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Solution

The fourth proportional to 1,916,933.30, 2,872,762.45 and 821,406.68 is: 1,230,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,933.30 : 2,872,762.45 = 821,406.68 : x
  2. Step 2: Convert to fraction form
    1,916,933.30/2,872,762.45 = 821,406.68/x
  3. Step 3: Cross multiply
    1,916,933.30x = 2,872,762.45 × 821,406.68
  4. Step 4: Simplify right side
    1,916,933.30x = 2,359,706,273,538.75
  5. Step 5: Solve for x
    x = 2,359,706,273,538.75/1,916,933.30
  6. Step 6: Final answer
    x = 1,230,979.85

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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.