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Finding the Fourth Proportional to 505,812.32, 698,028.36 and 279,463.04

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Solution

The fourth proportional to 505,812.32, 698,028.36 and 279,463.04 is: 385,663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,812.32 : 698,028.36 = 279,463.04 : x
  2. Step 2: Convert to fraction form
    505,812.32/698,028.36 = 279,463.04/x
  3. Step 3: Cross multiply
    505,812.32x = 698,028.36 × 279,463.04
  4. Step 4: Simplify right side
    505,812.32x = 195,073,127,491.81
  5. Step 5: Solve for x
    x = 195,073,127,491.81/505,812.32
  6. Step 6: Final answer
    x = 385,663.06

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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.