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Finding the Fourth Proportional to 616,181.20, 922,223.80 and 447,221.20

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Solution

The fourth proportional to 616,181.20, 922,223.80 and 447,221.20 is: 669,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,181.20 : 922,223.80 = 447,221.20 : x
  2. Step 2: Convert to fraction form
    616,181.20/922,223.80 = 447,221.20/x
  3. Step 3: Cross multiply
    616,181.20x = 922,223.80 × 447,221.20
  4. Step 4: Simplify right side
    616,181.20x = 412,438,034,504.56
  5. Step 5: Solve for x
    x = 412,438,034,504.56/616,181.20
  6. Step 6: Final answer
    x = 669,345.37

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1.5x scale

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.