Home / 658,236,871.78-908,368,097.09-356,821,251.28

Finding the Fourth Proportional to 658,236,871.78, 908,368,097.09 and 356,821,251.28

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Solution

The fourth proportional to 658,236,871.78, 908,368,097.09 and 356,821,251.28 is: 492,413,984.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,236,871.78 : 908,368,097.09 = 356,821,251.28 : x
  2. Step 2: Convert to fraction form
    658,236,871.78/908,368,097.09 = 356,821,251.28/x
  3. Step 3: Cross multiply
    658,236,871.78x = 908,368,097.09 × 356,821,251.28
  4. Step 4: Simplify right side
    658,236,871.78x = 324,125,041,022,431,296
  5. Step 5: Solve for x
    x = 324,125,041,022,431,296/658,236,871.78
  6. Step 6: Final answer
    x = 492,413,984.87

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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.