Home / 643,384.83-964,449.67-306,334.92

Finding the Fourth Proportional to 643,384.83, 964,449.67 and 306,334.92

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Solution

The fourth proportional to 643,384.83, 964,449.67 and 306,334.92 is: 459,203.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,384.83 : 964,449.67 = 306,334.92 : x
  2. Step 2: Convert to fraction form
    643,384.83/964,449.67 = 306,334.92/x
  3. Step 3: Cross multiply
    643,384.83x = 964,449.67 × 306,334.92
  4. Step 4: Simplify right side
    643,384.83x = 295,444,612,503.48
  5. Step 5: Solve for x
    x = 295,444,612,503.48/643,384.83
  6. Step 6: Final answer
    x = 459,203.57

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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.