Home / 639,110.09-881,971.27-352,630.15

Finding the Fourth Proportional to 639,110.09, 881,971.27 and 352,630.15

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Solution

The fourth proportional to 639,110.09, 881,971.27 and 352,630.15 is: 486,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,110.09 : 881,971.27 = 352,630.15 : x
  2. Step 2: Convert to fraction form
    639,110.09/881,971.27 = 352,630.15/x
  3. Step 3: Cross multiply
    639,110.09x = 881,971.27 × 352,630.15
  4. Step 4: Simplify right side
    639,110.09x = 311,009,658,149.29
  5. Step 5: Solve for x
    x = 311,009,658,149.29/639,110.09
  6. Step 6: Final answer
    x = 486,629.24

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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.