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Finding the Fourth Proportional to 509,041.11, 702,485.46 and 279,608.07

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Solution

The fourth proportional to 509,041.11, 702,485.46 and 279,608.07 is: 385,863.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,041.11 : 702,485.46 = 279,608.07 : x
  2. Step 2: Convert to fraction form
    509,041.11/702,485.46 = 279,608.07/x
  3. Step 3: Cross multiply
    509,041.11x = 702,485.46 × 279,608.07
  4. Step 4: Simplify right side
    509,041.11x = 196,420,603,673.66
  5. Step 5: Solve for x
    x = 196,420,603,673.66/509,041.11
  6. Step 6: Final answer
    x = 385,863.93

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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.