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Finding the Fourth Proportional to 523,631.31, 722,620.76 and 291,080.08

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Solution

The fourth proportional to 523,631.31, 722,620.76 and 291,080.08 is: 401,695.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,631.31 : 722,620.76 = 291,080.08 : x
  2. Step 2: Convert to fraction form
    523,631.31/722,620.76 = 291,080.08/x
  3. Step 3: Cross multiply
    523,631.31x = 722,620.76 × 291,080.08
  4. Step 4: Simplify right side
    523,631.31x = 210,340,507,175.06
  5. Step 5: Solve for x
    x = 210,340,507,175.06/523,631.31
  6. Step 6: Final answer
    x = 401,695.82

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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.