Home / 643,412.98-964,491.78-306,363.10

Finding the Fourth Proportional to 643,412.98, 964,491.78 and 306,363.10

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Solution

The fourth proportional to 643,412.98, 964,491.78 and 306,363.10 is: 459,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,412.98 : 964,491.78 = 306,363.10 : x
  2. Step 2: Convert to fraction form
    643,412.98/964,491.78 = 306,363.10/x
  3. Step 3: Cross multiply
    643,412.98x = 964,491.78 × 306,363.10
  4. Step 4: Simplify right side
    643,412.98x = 295,484,691,645.32
  5. Step 5: Solve for x
    x = 295,484,691,645.32/643,412.98
  6. Step 6: Final answer
    x = 459,245.77

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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.