Home / 498,345.31-687,795.24-316,868.05

Finding the Fourth Proportional to 498,345.31, 687,795.24 and 316,868.05

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Solution

The fourth proportional to 498,345.31, 687,795.24 and 316,868.05 is: 437,327.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,345.31 : 687,795.24 = 316,868.05 : x
  2. Step 2: Convert to fraction form
    498,345.31/687,795.24 = 316,868.05/x
  3. Step 3: Cross multiply
    498,345.31x = 687,795.24 × 316,868.05
  4. Step 4: Simplify right side
    498,345.31x = 217,940,336,498.08
  5. Step 5: Solve for x
    x = 217,940,336,498.08/498,345.31
  6. Step 6: Final answer
    x = 437,327.96

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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.