Home / 716,119.75-988,231.55-393,829.85

Finding the Fourth Proportional to 716,119.75, 988,231.55 and 393,829.85

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Solution

The fourth proportional to 716,119.75, 988,231.55 and 393,829.85 is: 543,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,119.75 : 988,231.55 = 393,829.85 : x
  2. Step 2: Convert to fraction form
    716,119.75/988,231.55 = 393,829.85/x
  3. Step 3: Cross multiply
    716,119.75x = 988,231.55 × 393,829.85
  4. Step 4: Simplify right side
    716,119.75x = 389,195,083,101.77
  5. Step 5: Solve for x
    x = 389,195,083,101.77/716,119.75
  6. Step 6: Final answer
    x = 543,477.66

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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.