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Finding the Fourth Proportional to 662,476.34, 993,693.32 and 278,428.66

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Solution

The fourth proportional to 662,476.34, 993,693.32 and 278,428.66 is: 417,634.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,476.34 : 993,693.32 = 278,428.66 : x
  2. Step 2: Convert to fraction form
    662,476.34/993,693.32 = 278,428.66/x
  3. Step 3: Cross multiply
    662,476.34x = 993,693.32 × 278,428.66
  4. Step 4: Simplify right side
    662,476.34x = 276,672,693,177.94
  5. Step 5: Solve for x
    x = 276,672,693,177.94/662,476.34
  6. Step 6: Final answer
    x = 417,634.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.