Home / 1,276,331.87-1,913,339.09-636,831.20

Finding the Fourth Proportional to 1,276,331.87, 1,913,339.09 and 636,831.20

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Solution

The fourth proportional to 1,276,331.87, 1,913,339.09 and 636,831.20 is: 954,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,331.87 : 1,913,339.09 = 636,831.20 : x
  2. Step 2: Convert to fraction form
    1,276,331.87/1,913,339.09 = 636,831.20/x
  3. Step 3: Cross multiply
    1,276,331.87x = 1,913,339.09 × 636,831.20
  4. Step 4: Simplify right side
    1,276,331.87x = 1,218,474,015,940.76
  5. Step 5: Solve for x
    x = 1,218,474,015,940.76/1,276,331.87
  6. Step 6: Final answer
    x = 954,668.65

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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.