Home / 869,805.20-1,304,772.60-308,766.80

Finding the Fourth Proportional to 869,805.20, 1,304,772.60 and 308,766.80

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Solution

The fourth proportional to 869,805.20, 1,304,772.60 and 308,766.80 is: 463,173.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,805.20 : 1,304,772.60 = 308,766.80 : x
  2. Step 2: Convert to fraction form
    869,805.20/1,304,772.60 = 308,766.80/x
  3. Step 3: Cross multiply
    869,805.20x = 1,304,772.60 × 308,766.80
  4. Step 4: Simplify right side
    869,805.20x = 402,870,460,429.68
  5. Step 5: Solve for x
    x = 402,870,460,429.68/869,805.20
  6. Step 6: Final answer
    x = 463,173.20

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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.