Home / 643,006.08-964,516.32-306,077.76

Finding the Fourth Proportional to 643,006.08, 964,516.32 and 306,077.76

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Solution

The fourth proportional to 643,006.08, 964,516.32 and 306,077.76 is: 459,120.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,006.08 : 964,516.32 = 306,077.76 : x
  2. Step 2: Convert to fraction form
    643,006.08/964,516.32 = 306,077.76/x
  3. Step 3: Cross multiply
    643,006.08x = 964,516.32 × 306,077.76
  4. Step 4: Simplify right side
    643,006.08x = 295,216,994,709.04
  5. Step 5: Solve for x
    x = 295,216,994,709.04/643,006.08
  6. Step 6: Final answer
    x = 459,120.07

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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.