Home / 1,265,865.20-1,898,964.65-412,637.90

Finding the Fourth Proportional to 1,265,865.20, 1,898,964.65 and 412,637.90

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Solution

The fourth proportional to 1,265,865.20, 1,898,964.65 and 412,637.90 is: 619,011.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,865.20 : 1,898,964.65 = 412,637.90 : x
  2. Step 2: Convert to fraction form
    1,265,865.20/1,898,964.65 = 412,637.90/x
  3. Step 3: Cross multiply
    1,265,865.20x = 1,898,964.65 × 412,637.90
  4. Step 4: Simplify right side
    1,265,865.20x = 783,584,785,350.24
  5. Step 5: Solve for x
    x = 783,584,785,350.24/1,265,865.20
  6. Step 6: Final answer
    x = 619,011.24

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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.