Home / 859,621.20-1,289,431.80-260,552.70

Finding the Fourth Proportional to 859,621.20, 1,289,431.80 and 260,552.70

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Solution

The fourth proportional to 859,621.20, 1,289,431.80 and 260,552.70 is: 390,829.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,621.20 : 1,289,431.80 = 260,552.70 : x
  2. Step 2: Convert to fraction form
    859,621.20/1,289,431.80 = 260,552.70/x
  3. Step 3: Cross multiply
    859,621.20x = 1,289,431.80 × 260,552.70
  4. Step 4: Simplify right side
    859,621.20x = 335,964,936,955.86
  5. Step 5: Solve for x
    x = 335,964,936,955.86/859,621.20
  6. Step 6: Final answer
    x = 390,829.05

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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.