Home / 657,849.42-907,839.77-385,921.94

Finding the Fourth Proportional to 657,849.42, 907,839.77 and 385,921.94

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Solution

The fourth proportional to 657,849.42, 907,839.77 and 385,921.94 is: 532,576.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,849.42 : 907,839.77 = 385,921.94 : x
  2. Step 2: Convert to fraction form
    657,849.42/907,839.77 = 385,921.94/x
  3. Step 3: Cross multiply
    657,849.42x = 907,839.77 × 385,921.94
  4. Step 4: Simplify right side
    657,849.42x = 350,355,278,778.75
  5. Step 5: Solve for x
    x = 350,355,278,778.75/657,849.42
  6. Step 6: Final answer
    x = 532,576.71

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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.