Home / 688,910.20-1,033,011.16-309,505.80

Finding the Fourth Proportional to 688,910.20, 1,033,011.16 and 309,505.80

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Solution

The fourth proportional to 688,910.20, 1,033,011.16 and 309,505.80 is: 464,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,910.20 : 1,033,011.16 = 309,505.80 : x
  2. Step 2: Convert to fraction form
    688,910.20/1,033,011.16 = 309,505.80/x
  3. Step 3: Cross multiply
    688,910.20x = 1,033,011.16 × 309,505.80
  4. Step 4: Simplify right side
    688,910.20x = 319,722,945,484.73
  5. Step 5: Solve for x
    x = 319,722,945,484.73/688,910.20
  6. Step 6: Final answer
    x = 464,099.60

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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.