Home / 657,171.28-906,987.14-385,306.12

Finding the Fourth Proportional to 657,171.28, 906,987.14 and 385,306.12

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Solution

The fourth proportional to 657,171.28, 906,987.14 and 385,306.12 is: 531,775.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,171.28 : 906,987.14 = 385,306.12 : x
  2. Step 2: Convert to fraction form
    657,171.28/906,987.14 = 385,306.12/x
  3. Step 3: Cross multiply
    657,171.28x = 906,987.14 × 385,306.12
  4. Step 4: Simplify right side
    657,171.28x = 349,467,695,803.30
  5. Step 5: Solve for x
    x = 349,467,695,803.30/657,171.28
  6. Step 6: Final answer
    x = 531,775.67

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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.