Home / 716,720.13-989,073.48-394,430.22

Finding the Fourth Proportional to 716,720.13, 989,073.48 and 394,430.22

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Solution

The fourth proportional to 716,720.13, 989,073.48 and 394,430.22 is: 544,313.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,720.13 : 989,073.48 = 394,430.22 : x
  2. Step 2: Convert to fraction form
    716,720.13/989,073.48 = 394,430.22/x
  3. Step 3: Cross multiply
    716,720.13x = 989,073.48 × 394,430.22
  4. Step 4: Simplify right side
    716,720.13x = 390,120,471,791.68
  5. Step 5: Solve for x
    x = 390,120,471,791.68/716,720.13
  6. Step 6: Final answer
    x = 544,313.54

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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.