Home / 1,291,284.30-1,936,926.45-392,718.90

Finding the Fourth Proportional to 1,291,284.30, 1,936,926.45 and 392,718.90

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Solution

The fourth proportional to 1,291,284.30, 1,936,926.45 and 392,718.90 is: 589,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,284.30 : 1,936,926.45 = 392,718.90 : x
  2. Step 2: Convert to fraction form
    1,291,284.30/1,936,926.45 = 392,718.90/x
  3. Step 3: Cross multiply
    1,291,284.30x = 1,936,926.45 × 392,718.90
  4. Step 4: Simplify right side
    1,291,284.30x = 760,667,624,824.91
  5. Step 5: Solve for x
    x = 760,667,624,824.91/1,291,284.30
  6. Step 6: Final answer
    x = 589,078.35

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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.