Home / 1,320,509.49-1,979,451.81-787,231.41

Finding the Fourth Proportional to 1,320,509.49, 1,979,451.81 and 787,231.41

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Solution

The fourth proportional to 1,320,509.49, 1,979,451.81 and 787,231.41 is: 1,180,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,509.49 : 1,979,451.81 = 787,231.41 : x
  2. Step 2: Convert to fraction form
    1,320,509.49/1,979,451.81 = 787,231.41/x
  3. Step 3: Cross multiply
    1,320,509.49x = 1,979,451.81 × 787,231.41
  4. Step 4: Simplify right side
    1,320,509.49x = 1,558,286,639,413.35
  5. Step 5: Solve for x
    x = 1,558,286,639,413.35/1,320,509.49
  6. Step 6: Final answer
    x = 1,180,064.70

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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.