Home / 996,942.70-1,495,608.45-428,322.70

Finding the Fourth Proportional to 996,942.70, 1,495,608.45 and 428,322.70

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Solution

The fourth proportional to 996,942.70, 1,495,608.45 and 428,322.70 is: 642,567.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,942.70 : 1,495,608.45 = 428,322.70 : x
  2. Step 2: Convert to fraction form
    996,942.70/1,495,608.45 = 428,322.70/x
  3. Step 3: Cross multiply
    996,942.70x = 1,495,608.45 × 428,322.70
  4. Step 4: Simplify right side
    996,942.70x = 640,603,049,446.82
  5. Step 5: Solve for x
    x = 640,603,049,446.82/996,942.70
  6. Step 6: Final answer
    x = 642,567.57

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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.