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Finding the Fourth Proportional to 552,121.68, 761,920.62 and 307,104.78

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Solution

The fourth proportional to 552,121.68, 761,920.62 and 307,104.78 is: 423,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,121.68 : 761,920.62 = 307,104.78 : x
  2. Step 2: Convert to fraction form
    552,121.68/761,920.62 = 307,104.78/x
  3. Step 3: Cross multiply
    552,121.68x = 761,920.62 × 307,104.78
  4. Step 4: Simplify right side
    552,121.68x = 233,989,464,382.56
  5. Step 5: Solve for x
    x = 233,989,464,382.56/552,121.68
  6. Step 6: Final answer
    x = 423,800.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.