Home / 639,036.15-881,855.13-352,556.16

Finding the Fourth Proportional to 639,036.15, 881,855.13 and 352,556.16

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Solution

The fourth proportional to 639,036.15, 881,855.13 and 352,556.16 is: 486,519.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,036.15 : 881,855.13 = 352,556.16 : x
  2. Step 2: Convert to fraction form
    639,036.15/881,855.13 = 352,556.16/x
  3. Step 3: Cross multiply
    639,036.15x = 881,855.13 × 352,556.16
  4. Step 4: Simplify right side
    639,036.15x = 310,903,458,309.10
  5. Step 5: Solve for x
    x = 310,903,458,309.10/639,036.15
  6. Step 6: Final answer
    x = 486,519.36

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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.