Home / 851,128.12-1,276,983.82-290,556.28

Finding the Fourth Proportional to 851,128.12, 1,276,983.82 and 290,556.28

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Solution

The fourth proportional to 851,128.12, 1,276,983.82 and 290,556.28 is: 435,933.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,128.12 : 1,276,983.82 = 290,556.28 : x
  2. Step 2: Convert to fraction form
    851,128.12/1,276,983.82 = 290,556.28/x
  3. Step 3: Cross multiply
    851,128.12x = 1,276,983.82 × 290,556.28
  4. Step 4: Simplify right side
    851,128.12x = 371,035,668,359.39
  5. Step 5: Solve for x
    x = 371,035,668,359.39/851,128.12
  6. Step 6: Final answer
    x = 435,933.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.