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Finding the Fourth Proportional to 658,649.12, 908,935.36 and 356,843.12

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Solution

The fourth proportional to 658,649.12, 908,935.36 and 356,843.12 is: 492,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,649.12 : 908,935.36 = 356,843.12 : x
  2. Step 2: Convert to fraction form
    658,649.12/908,935.36 = 356,843.12/x
  3. Step 3: Cross multiply
    658,649.12x = 908,935.36 × 356,843.12
  4. Step 4: Simplify right side
    658,649.12x = 324,347,329,740.72
  5. Step 5: Solve for x
    x = 324,347,329,740.72/658,649.12
  6. Step 6: Final answer
    x = 492,443.28

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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.