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Finding the Fourth Proportional to 658,678.02, 908,978.94 and 356,872.02

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Solution

The fourth proportional to 658,678.02, 908,978.94 and 356,872.02 is: 492,485.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,678.02 : 908,978.94 = 356,872.02 : x
  2. Step 2: Convert to fraction form
    658,678.02/908,978.94 = 356,872.02/x
  3. Step 3: Cross multiply
    658,678.02x = 908,978.94 × 356,872.02
  4. Step 4: Simplify right side
    658,678.02x = 324,389,150,455.26
  5. Step 5: Solve for x
    x = 324,389,150,455.26/658,678.02
  6. Step 6: Final answer
    x = 492,485.16

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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.