Home / 825,139.92-1,238,192.37-345,327.65

Finding the Fourth Proportional to 825,139.92, 1,238,192.37 and 345,327.65

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Solution

The fourth proportional to 825,139.92, 1,238,192.37 and 345,327.65 is: 518,193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,139.92 : 1,238,192.37 = 345,327.65 : x
  2. Step 2: Convert to fraction form
    825,139.92/1,238,192.37 = 345,327.65/x
  3. Step 3: Cross multiply
    825,139.92x = 1,238,192.37 × 345,327.65
  4. Step 4: Simplify right side
    825,139.92x = 427,582,055,189.07
  5. Step 5: Solve for x
    x = 427,582,055,189.07/825,139.92
  6. Step 6: Final answer
    x = 518,193.39

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1.5x scale

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.