Home / 693,738.40-1,040,089.20-378,551.20

Finding the Fourth Proportional to 693,738.40, 1,040,089.20 and 378,551.20

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Solution

The fourth proportional to 693,738.40, 1,040,089.20 and 378,551.20 is: 567,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,738.40 : 1,040,089.20 = 378,551.20 : x
  2. Step 2: Convert to fraction form
    693,738.40/1,040,089.20 = 378,551.20/x
  3. Step 3: Cross multiply
    693,738.40x = 1,040,089.20 × 378,551.20
  4. Step 4: Simplify right side
    693,738.40x = 393,727,014,767.04
  5. Step 5: Solve for x
    x = 393,727,014,767.04/693,738.40
  6. Step 6: Final answer
    x = 567,543.93

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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.