Home / 1,313,286.76-1,969,989.10-402,402.36

Finding the Fourth Proportional to 1,313,286.76, 1,969,989.10 and 402,402.36

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Solution

The fourth proportional to 1,313,286.76, 1,969,989.10 and 402,402.36 is: 603,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,286.76 : 1,969,989.10 = 402,402.36 : x
  2. Step 2: Convert to fraction form
    1,313,286.76/1,969,989.10 = 402,402.36/x
  3. Step 3: Cross multiply
    1,313,286.76x = 1,969,989.10 × 402,402.36
  4. Step 4: Simplify right side
    1,313,286.76x = 792,728,263,014.28
  5. Step 5: Solve for x
    x = 792,728,263,014.28/1,313,286.76
  6. Step 6: Final answer
    x = 603,621.61

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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.