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Finding the Fourth Proportional to 880,861.60, 1,320,255.60 and 459,920.80

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Solution

The fourth proportional to 880,861.60, 1,320,255.60 and 459,920.80 is: 689,339.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,861.60 : 1,320,255.60 = 459,920.80 : x
  2. Step 2: Convert to fraction form
    880,861.60/1,320,255.60 = 459,920.80/x
  3. Step 3: Cross multiply
    880,861.60x = 1,320,255.60 × 459,920.80
  4. Step 4: Simplify right side
    880,861.60x = 607,213,011,756.48
  5. Step 5: Solve for x
    x = 607,213,011,756.48/880,861.60
  6. Step 6: Final answer
    x = 689,339.86

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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.