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Finding the Fourth Proportional to 678,354, 936,128.52 and 376,576.08

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Solution

The fourth proportional to 678,354, 936,128.52 and 376,576.08 is: 519,674.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,354 : 936,128.52 = 376,576.08 : x
  2. Step 2: Convert to fraction form
    678,354/936,128.52 = 376,576.08/x
  3. Step 3: Cross multiply
    678,354x = 936,128.52 × 376,576.08
  4. Step 4: Simplify right side
    678,354x = 352,523,608,437.80
  5. Step 5: Solve for x
    x = 352,523,608,437.80/678,354
  6. Step 6: Final answer
    x = 519,674.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.