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Finding the Fourth Proportional to 658,678.06, 908,975.82 and 356,872.06

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Solution

The fourth proportional to 658,678.06, 908,975.82 and 356,872.06 is: 492,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,678.06 : 908,975.82 = 356,872.06 : x
  2. Step 2: Convert to fraction form
    658,678.06/908,975.82 = 356,872.06/x
  3. Step 3: Cross multiply
    658,678.06x = 908,975.82 × 356,872.06
  4. Step 4: Simplify right side
    658,678.06x = 324,388,073,373.59
  5. Step 5: Solve for x
    x = 324,388,073,373.59/658,678.06
  6. Step 6: Final answer
    x = 492,483.50

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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.