Home / 1,306,395.91-1,959,403.78-407,628.55

Finding the Fourth Proportional to 1,306,395.91, 1,959,403.78 and 407,628.55

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Solution

The fourth proportional to 1,306,395.91, 1,959,403.78 and 407,628.55 is: 611,383.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,395.91 : 1,959,403.78 = 407,628.55 : x
  2. Step 2: Convert to fraction form
    1,306,395.91/1,959,403.78 = 407,628.55/x
  3. Step 3: Cross multiply
    1,306,395.91x = 1,959,403.78 × 407,628.55
  4. Step 4: Simplify right side
    1,306,395.91x = 798,708,921,705.92
  5. Step 5: Solve for x
    x = 798,708,921,705.92/1,306,395.91
  6. Step 6: Final answer
    x = 611,383.51

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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.