Home / 643,275.57-964,544.19-243,661.47

Finding the Fourth Proportional to 643,275.57, 964,544.19 and 243,661.47

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Solution

The fourth proportional to 643,275.57, 964,544.19 and 243,661.47 is: 365,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,275.57 : 964,544.19 = 243,661.47 : x
  2. Step 2: Convert to fraction form
    643,275.57/964,544.19 = 243,661.47/x
  3. Step 3: Cross multiply
    643,275.57x = 964,544.19 × 243,661.47
  4. Step 4: Simplify right side
    643,275.57x = 235,022,250,684.59
  5. Step 5: Solve for x
    x = 235,022,250,684.59/643,275.57
  6. Step 6: Final answer
    x = 365,352.36

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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.