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Finding the Fourth Proportional to 506,360.80, 698,764.08 and 279,998.56

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Solution

The fourth proportional to 506,360.80, 698,764.08 and 279,998.56 is: 386,390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,360.80 : 698,764.08 = 279,998.56 : x
  2. Step 2: Convert to fraction form
    506,360.80/698,764.08 = 279,998.56/x
  3. Step 3: Cross multiply
    506,360.80x = 698,764.08 × 279,998.56
  4. Step 4: Simplify right side
    506,360.80x = 195,652,936,179.73
  5. Step 5: Solve for x
    x = 195,652,936,179.73/506,360.80
  6. Step 6: Final answer
    x = 386,390.37

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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.