Home / 642,439.92-965,050.44-417,684.72

Finding the Fourth Proportional to 642,439.92, 965,050.44 and 417,684.72

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Solution

The fourth proportional to 642,439.92, 965,050.44 and 417,684.72 is: 627,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,439.92 : 965,050.44 = 417,684.72 : x
  2. Step 2: Convert to fraction form
    642,439.92/965,050.44 = 417,684.72/x
  3. Step 3: Cross multiply
    642,439.92x = 965,050.44 × 417,684.72
  4. Step 4: Simplify right side
    642,439.92x = 403,086,822,817.28
  5. Step 5: Solve for x
    x = 403,086,822,817.28/642,439.92
  6. Step 6: Final answer
    x = 627,431.16

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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.