Home / 1,278,157.76-1,917,880.32-851,981.12

Finding the Fourth Proportional to 1,278,157.76, 1,917,880.32 and 851,981.12

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Solution

The fourth proportional to 1,278,157.76, 1,917,880.32 and 851,981.12 is: 1,278,400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,157.76 : 1,917,880.32 = 851,981.12 : x
  2. Step 2: Convert to fraction form
    1,278,157.76/1,917,880.32 = 851,981.12/x
  3. Step 3: Cross multiply
    1,278,157.76x = 1,917,880.32 × 851,981.12
  4. Step 4: Simplify right side
    1,278,157.76x = 1,633,997,823,059.56
  5. Step 5: Solve for x
    x = 1,633,997,823,059.56/1,278,157.76
  6. Step 6: Final answer
    x = 1,278,400.74

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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.