Home / 810,939.17-1,119,073.77-448,378.31

Finding the Fourth Proportional to 810,939.17, 1,119,073.77 and 448,378.31

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Solution

The fourth proportional to 810,939.17, 1,119,073.77 and 448,378.31 is: 618,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,939.17 : 1,119,073.77 = 448,378.31 : x
  2. Step 2: Convert to fraction form
    810,939.17/1,119,073.77 = 448,378.31/x
  3. Step 3: Cross multiply
    810,939.17x = 1,119,073.77 × 448,378.31
  4. Step 4: Simplify right side
    810,939.17x = 501,768,400,162.56
  5. Step 5: Solve for x
    x = 501,768,400,162.56/810,939.17
  6. Step 6: Final answer
    x = 618,749.74

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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.