Home / 880,220.50-1,320,336.21-311,477.78

Finding the Fourth Proportional to 880,220.50, 1,320,336.21 and 311,477.78

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Solution

The fourth proportional to 880,220.50, 1,320,336.21 and 311,477.78 is: 467,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,220.50 : 1,320,336.21 = 311,477.78 : x
  2. Step 2: Convert to fraction form
    880,220.50/1,320,336.21 = 311,477.78/x
  3. Step 3: Cross multiply
    880,220.50x = 1,320,336.21 × 311,477.78
  4. Step 4: Simplify right side
    880,220.50x = 411,255,391,544.41
  5. Step 5: Solve for x
    x = 411,255,391,544.41/880,220.50
  6. Step 6: Final answer
    x = 467,218.60

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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.