Home / 859,621.20-1,289,431.80-268,645.20

Finding the Fourth Proportional to 859,621.20, 1,289,431.80 and 268,645.20

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Solution

The fourth proportional to 859,621.20, 1,289,431.80 and 268,645.20 is: 402,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,621.20 : 1,289,431.80 = 268,645.20 : x
  2. Step 2: Convert to fraction form
    859,621.20/1,289,431.80 = 268,645.20/x
  3. Step 3: Cross multiply
    859,621.20x = 1,289,431.80 × 268,645.20
  4. Step 4: Simplify right side
    859,621.20x = 346,399,663,797.36
  5. Step 5: Solve for x
    x = 346,399,663,797.36/859,621.20
  6. Step 6: Final answer
    x = 402,967.80

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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.