Home / 1,452,123.48-2,178,321.81-427,454.43

Finding the Fourth Proportional to 1,452,123.48, 2,178,321.81 and 427,454.43

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Solution

The fourth proportional to 1,452,123.48, 2,178,321.81 and 427,454.43 is: 641,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452,123.48 : 2,178,321.81 = 427,454.43 : x
  2. Step 2: Convert to fraction form
    1,452,123.48/2,178,321.81 = 427,454.43/x
  3. Step 3: Cross multiply
    1,452,123.48x = 2,178,321.81 × 427,454.43
  4. Step 4: Simplify right side
    1,452,123.48x = 931,133,307,650.12
  5. Step 5: Solve for x
    x = 931,133,307,650.12/1,452,123.48
  6. Step 6: Final answer
    x = 641,221.85

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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.