Home / 905,879.69-1,250,129.87-497,998.72

Finding the Fourth Proportional to 905,879.69, 1,250,129.87 and 497,998.72

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Solution

The fourth proportional to 905,879.69, 1,250,129.87 and 497,998.72 is: 687,246.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,879.69 : 1,250,129.87 = 497,998.72 : x
  2. Step 2: Convert to fraction form
    905,879.69/1,250,129.87 = 497,998.72/x
  3. Step 3: Cross multiply
    905,879.69x = 1,250,129.87 × 497,998.72
  4. Step 4: Simplify right side
    905,879.69x = 622,563,075,093.77
  5. Step 5: Solve for x
    x = 622,563,075,093.77/905,879.69
  6. Step 6: Final answer
    x = 687,246.97

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Double scale
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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.