Home / 498,844.12-688,631.46-317,804.28

Finding the Fourth Proportional to 498,844.12, 688,631.46 and 317,804.28

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Solution

The fourth proportional to 498,844.12, 688,631.46 and 317,804.28 is: 438,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,844.12 : 688,631.46 = 317,804.28 : x
  2. Step 2: Convert to fraction form
    498,844.12/688,631.46 = 317,804.28/x
  3. Step 3: Cross multiply
    498,844.12x = 688,631.46 × 317,804.28
  4. Step 4: Simplify right side
    498,844.12x = 218,850,025,330.65
  5. Step 5: Solve for x
    x = 218,850,025,330.65/498,844.12
  6. Step 6: Final answer
    x = 438,714.25

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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.