Home / 869,719.20-1,304,643.60-308,680.80

Finding the Fourth Proportional to 869,719.20, 1,304,643.60 and 308,680.80

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Solution

The fourth proportional to 869,719.20, 1,304,643.60 and 308,680.80 is: 463,044.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,719.20 : 1,304,643.60 = 308,680.80 : x
  2. Step 2: Convert to fraction form
    869,719.20/1,304,643.60 = 308,680.80/x
  3. Step 3: Cross multiply
    869,719.20x = 1,304,643.60 × 308,680.80
  4. Step 4: Simplify right side
    869,719.20x = 402,718,430,162.88
  5. Step 5: Solve for x
    x = 402,718,430,162.88/869,719.20
  6. Step 6: Final answer
    x = 463,044.20

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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.