Home / 1,399,435.74-1,931,817.20-940,816.30

Finding the Fourth Proportional to 1,399,435.74, 1,931,817.20 and 940,816.30

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Solution

The fourth proportional to 1,399,435.74, 1,931,817.20 and 940,816.30 is: 1,298,727.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,435.74 : 1,931,817.20 = 940,816.30 : x
  2. Step 2: Convert to fraction form
    1,399,435.74/1,931,817.20 = 940,816.30/x
  3. Step 3: Cross multiply
    1,399,435.74x = 1,931,817.20 × 940,816.30
  4. Step 4: Simplify right side
    1,399,435.74x = 1,817,485,112,618.75
  5. Step 5: Solve for x
    x = 1,817,485,112,618.75/1,399,435.74
  6. Step 6: Final answer
    x = 1,298,727.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.