Home / 639,124.79-882,010.66-352,663.32

Finding the Fourth Proportional to 639,124.79, 882,010.66 and 352,663.32

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Solution

The fourth proportional to 639,124.79, 882,010.66 and 352,663.32 is: 486,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,124.79 : 882,010.66 = 352,663.32 : x
  2. Step 2: Convert to fraction form
    639,124.79/882,010.66 = 352,663.32/x
  3. Step 3: Cross multiply
    639,124.79x = 882,010.66 × 352,663.32
  4. Step 4: Simplify right side
    639,124.79x = 311,052,806,749.33
  5. Step 5: Solve for x
    x = 311,052,806,749.33/639,124.79
  6. Step 6: Final answer
    x = 486,685.56

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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.