Home / 691,128.46-953,761.96-385,224.52

Finding the Fourth Proportional to 691,128.46, 953,761.96 and 385,224.52

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Solution

The fourth proportional to 691,128.46, 953,761.96 and 385,224.52 is: 531,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,128.46 : 953,761.96 = 385,224.52 : x
  2. Step 2: Convert to fraction form
    691,128.46/953,761.96 = 385,224.52/x
  3. Step 3: Cross multiply
    691,128.46x = 953,761.96 × 385,224.52
  4. Step 4: Simplify right side
    691,128.46x = 367,412,491,309.14
  5. Step 5: Solve for x
    x = 367,412,491,309.14/691,128.46
  6. Step 6: Final answer
    x = 531,612.45

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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.