Home / 643,168.06-887,556.32-352,783.46

Finding the Fourth Proportional to 643,168.06, 887,556.32 and 352,783.46

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Solution

The fourth proportional to 643,168.06, 887,556.32 and 352,783.46 is: 486,832.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,168.06 : 887,556.32 = 352,783.46 : x
  2. Step 2: Convert to fraction form
    643,168.06/887,556.32 = 352,783.46/x
  3. Step 3: Cross multiply
    643,168.06x = 887,556.32 × 352,783.46
  4. Step 4: Simplify right side
    643,168.06x = 313,115,191,292.38
  5. Step 5: Solve for x
    x = 313,115,191,292.38/643,168.06
  6. Step 6: Final answer
    x = 486,832.62

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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.