Home / 643,007.21-964,313.81-444,602.57

Finding the Fourth Proportional to 643,007.21, 964,313.81 and 444,602.57

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Solution

The fourth proportional to 643,007.21, 964,313.81 and 444,602.57 is: 666,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,007.21 : 964,313.81 = 444,602.57 : x
  2. Step 2: Convert to fraction form
    643,007.21/964,313.81 = 444,602.57/x
  3. Step 3: Cross multiply
    643,007.21x = 964,313.81 × 444,602.57
  4. Step 4: Simplify right side
    643,007.21x = 428,736,398,212.49
  5. Step 5: Solve for x
    x = 428,736,398,212.49/643,007.21
  6. Step 6: Final answer
    x = 666,767.64

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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.