Home / 840,990.72-1,160,824.64-518,801.28

Finding the Fourth Proportional to 840,990.72, 1,160,824.64 and 518,801.28

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Solution

The fourth proportional to 840,990.72, 1,160,824.64 and 518,801.28 is: 716,104.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,990.72 : 1,160,824.64 = 518,801.28 : x
  2. Step 2: Convert to fraction form
    840,990.72/1,160,824.64 = 518,801.28/x
  3. Step 3: Cross multiply
    840,990.72x = 1,160,824.64 × 518,801.28
  4. Step 4: Simplify right side
    840,990.72x = 602,237,309,087.54
  5. Step 5: Solve for x
    x = 602,237,309,087.54/840,990.72
  6. Step 6: Final answer
    x = 716,104.58

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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.