Home / 767,986.20-1,151,979.30-390,072.60

Finding the Fourth Proportional to 767,986.20, 1,151,979.30 and 390,072.60

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Solution

The fourth proportional to 767,986.20, 1,151,979.30 and 390,072.60 is: 585,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,986.20 : 1,151,979.30 = 390,072.60 : x
  2. Step 2: Convert to fraction form
    767,986.20/1,151,979.30 = 390,072.60/x
  3. Step 3: Cross multiply
    767,986.20x = 1,151,979.30 × 390,072.60
  4. Step 4: Simplify right side
    767,986.20x = 449,355,560,697.18
  5. Step 5: Solve for x
    x = 449,355,560,697.18/767,986.20
  6. Step 6: Final answer
    x = 585,108.90

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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.