Home / 1,317,867.30-1,976,051.70-518,715.63

Finding the Fourth Proportional to 1,317,867.30, 1,976,051.70 and 518,715.63

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Solution

The fourth proportional to 1,317,867.30, 1,976,051.70 and 518,715.63 is: 777,778.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,867.30 : 1,976,051.70 = 518,715.63 : x
  2. Step 2: Convert to fraction form
    1,317,867.30/1,976,051.70 = 518,715.63/x
  3. Step 3: Cross multiply
    1,317,867.30x = 1,976,051.70 × 518,715.63
  4. Step 4: Simplify right side
    1,317,867.30x = 1,025,008,902,478.07
  5. Step 5: Solve for x
    x = 1,025,008,902,478.07/1,317,867.30
  6. Step 6: Final answer
    x = 777,778.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.