Home / 728,914.56-1,006,012.89-442,379.22

Finding the Fourth Proportional to 728,914.56, 1,006,012.89 and 442,379.22

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Solution

The fourth proportional to 728,914.56, 1,006,012.89 and 442,379.22 is: 610,550.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,914.56 : 1,006,012.89 = 442,379.22 : x
  2. Step 2: Convert to fraction form
    728,914.56/1,006,012.89 = 442,379.22/x
  3. Step 3: Cross multiply
    728,914.56x = 1,006,012.89 × 442,379.22
  4. Step 4: Simplify right side
    728,914.56x = 445,039,197,588.15
  5. Step 5: Solve for x
    x = 445,039,197,588.15/728,914.56
  6. Step 6: Final answer
    x = 610,550.57

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1.5x scale

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.