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Finding the Fourth Proportional to 502,776.28, 693,813.54 and 276,420.04

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Solution

The fourth proportional to 502,776.28, 693,813.54 and 276,420.04 is: 381,449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,776.28 : 693,813.54 = 276,420.04 : x
  2. Step 2: Convert to fraction form
    502,776.28/693,813.54 = 276,420.04/x
  3. Step 3: Cross multiply
    502,776.28x = 693,813.54 × 276,420.04
  4. Step 4: Simplify right side
    502,776.28x = 191,783,966,479.34
  5. Step 5: Solve for x
    x = 191,783,966,479.34/502,776.28
  6. Step 6: Final answer
    x = 381,449.91

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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.