Home / 716,404.45-988,631.04-394,114.90

Finding the Fourth Proportional to 716,404.45, 988,631.04 and 394,114.90

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Solution

The fourth proportional to 716,404.45, 988,631.04 and 394,114.90 is: 543,874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,404.45 : 988,631.04 = 394,114.90 : x
  2. Step 2: Convert to fraction form
    716,404.45/988,631.04 = 394,114.90/x
  3. Step 3: Cross multiply
    716,404.45x = 988,631.04 × 394,114.90
  4. Step 4: Simplify right side
    716,404.45x = 389,634,223,466.50
  5. Step 5: Solve for x
    x = 389,634,223,466.50/716,404.45
  6. Step 6: Final answer
    x = 543,874.66

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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.