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Finding the Fourth Proportional to 552,552.34, 762,468.78 and 310,918.54

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Solution

The fourth proportional to 552,552.34, 762,468.78 and 310,918.54 is: 429,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,552.34 : 762,468.78 = 310,918.54 : x
  2. Step 2: Convert to fraction form
    552,552.34/762,468.78 = 310,918.54/x
  3. Step 3: Cross multiply
    552,552.34x = 762,468.78 × 310,918.54
  4. Step 4: Simplify right side
    552,552.34x = 237,065,679,873.18
  5. Step 5: Solve for x
    x = 237,065,679,873.18/552,552.34
  6. Step 6: Final answer
    x = 429,037.51

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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.