Home / 800,909.60-1,105,255.76-438,333.36

Finding the Fourth Proportional to 800,909.60, 1,105,255.76 and 438,333.36

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Solution

The fourth proportional to 800,909.60, 1,105,255.76 and 438,333.36 is: 604,900.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,909.60 : 1,105,255.76 = 438,333.36 : x
  2. Step 2: Convert to fraction form
    800,909.60/1,105,255.76 = 438,333.36/x
  3. Step 3: Cross multiply
    800,909.60x = 1,105,255.76 × 438,333.36
  4. Step 4: Simplify right side
    800,909.60x = 484,470,470,940.15
  5. Step 5: Solve for x
    x = 484,470,470,940.15/800,909.60
  6. Step 6: Final answer
    x = 604,900.32

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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.