Home / 870,142.65-1,305,249.34-414,499.63

Finding the Fourth Proportional to 870,142.65, 1,305,249.34 and 414,499.63

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Solution

The fourth proportional to 870,142.65, 1,305,249.34 and 414,499.63 is: 621,766.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,142.65 : 1,305,249.34 = 414,499.63 : x
  2. Step 2: Convert to fraction form
    870,142.65/1,305,249.34 = 414,499.63/x
  3. Step 3: Cross multiply
    870,142.65x = 1,305,249.34 × 414,499.63
  4. Step 4: Simplify right side
    870,142.65x = 541,025,367,412.90
  5. Step 5: Solve for x
    x = 541,025,367,412.90/870,142.65
  6. Step 6: Final answer
    x = 621,766.29

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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.