Home / 693,764.40-1,040,128.20-378,577.20

Finding the Fourth Proportional to 693,764.40, 1,040,128.20 and 378,577.20

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Solution

The fourth proportional to 693,764.40, 1,040,128.20 and 378,577.20 is: 567,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,764.40 : 1,040,128.20 = 378,577.20 : x
  2. Step 2: Convert to fraction form
    693,764.40/1,040,128.20 = 378,577.20/x
  3. Step 3: Cross multiply
    693,764.40x = 1,040,128.20 × 378,577.20
  4. Step 4: Simplify right side
    693,764.40x = 393,768,821,597.04
  5. Step 5: Solve for x
    x = 393,768,821,597.04/693,764.40
  6. Step 6: Final answer
    x = 567,582.92

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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.