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Finding the Fourth Proportional to 505,983.48, 698,250.78 and 279,624.12

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Solution

The fourth proportional to 505,983.48, 698,250.78 and 279,624.12 is: 385,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,983.48 : 698,250.78 = 279,624.12 : x
  2. Step 2: Convert to fraction form
    505,983.48/698,250.78 = 279,624.12/x
  3. Step 3: Cross multiply
    505,983.48x = 698,250.78 × 279,624.12
  4. Step 4: Simplify right side
    505,983.48x = 195,247,759,896.81
  5. Step 5: Solve for x
    x = 195,247,759,896.81/505,983.48
  6. Step 6: Final answer
    x = 385,877.74

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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.