Home / 821,491.74-1,231,710.33-342,051.66

Finding the Fourth Proportional to 821,491.74, 1,231,710.33 and 342,051.66

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Solution

The fourth proportional to 821,491.74, 1,231,710.33 and 342,051.66 is: 512,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,491.74 : 1,231,710.33 = 342,051.66 : x
  2. Step 2: Convert to fraction form
    821,491.74/1,231,710.33 = 342,051.66/x
  3. Step 3: Cross multiply
    821,491.74x = 1,231,710.33 × 342,051.66
  4. Step 4: Simplify right side
    821,491.74x = 421,308,563,015.65
  5. Step 5: Solve for x
    x = 421,308,563,015.65/821,491.74
  6. Step 6: Final answer
    x = 512,857.94

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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.