Home / 640,766.45-884,247.98-350,378.94

Finding the Fourth Proportional to 640,766.45, 884,247.98 and 350,378.94

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Solution

The fourth proportional to 640,766.45, 884,247.98 and 350,378.94 is: 483,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,766.45 : 884,247.98 = 350,378.94 : x
  2. Step 2: Convert to fraction form
    640,766.45/884,247.98 = 350,378.94/x
  3. Step 3: Cross multiply
    640,766.45x = 884,247.98 × 350,378.94
  4. Step 4: Simplify right side
    640,766.45x = 309,821,871,493.58
  5. Step 5: Solve for x
    x = 309,821,871,493.58/640,766.45
  6. Step 6: Final answer
    x = 483,517.62

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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.