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Finding the Fourth Proportional to 678,082.38, 935,797.42 and 376,276.38

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Solution

The fourth proportional to 678,082.38, 935,797.42 and 376,276.38 is: 519,285.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,082.38 : 935,797.42 = 376,276.38 : x
  2. Step 2: Convert to fraction form
    678,082.38/935,797.42 = 376,276.38/x
  3. Step 3: Cross multiply
    678,082.38x = 935,797.42 × 376,276.38
  4. Step 4: Simplify right side
    678,082.38x = 352,118,465,610.94
  5. Step 5: Solve for x
    x = 352,118,465,610.94/678,082.38
  6. Step 6: Final answer
    x = 519,285.67

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Double scale
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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.