Home / 840,411.28-1,260,627.84-279,445.76

Finding the Fourth Proportional to 840,411.28, 1,260,627.84 and 279,445.76

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Solution

The fourth proportional to 840,411.28, 1,260,627.84 and 279,445.76 is: 419,172.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,411.28 : 1,260,627.84 = 279,445.76 : x
  2. Step 2: Convert to fraction form
    840,411.28/1,260,627.84 = 279,445.76/x
  3. Step 3: Cross multiply
    840,411.28x = 1,260,627.84 × 279,445.76
  4. Step 4: Simplify right side
    840,411.28x = 352,277,104,825.96
  5. Step 5: Solve for x
    x = 352,277,104,825.96/840,411.28
  6. Step 6: Final answer
    x = 419,172.27

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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.