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Finding the Fourth Proportional to 678,351, 936,124.38 and 376,573.08

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Solution

The fourth proportional to 678,351, 936,124.38 and 376,573.08 is: 519,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,351 : 936,124.38 = 376,573.08 : x
  2. Step 2: Convert to fraction form
    678,351/936,124.38 = 376,573.08/x
  3. Step 3: Cross multiply
    678,351x = 936,124.38 × 376,573.08
  4. Step 4: Simplify right side
    678,351x = 352,519,241,039.69
  5. Step 5: Solve for x
    x = 352,519,241,039.69/678,351
  6. Step 6: Final answer
    x = 519,670.85

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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.