Home / 763,621.20-1,145,431.80-264,985.20

Finding the Fourth Proportional to 763,621.20, 1,145,431.80 and 264,985.20

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Solution

The fourth proportional to 763,621.20, 1,145,431.80 and 264,985.20 is: 397,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,621.20 : 1,145,431.80 = 264,985.20 : x
  2. Step 2: Convert to fraction form
    763,621.20/1,145,431.80 = 264,985.20/x
  3. Step 3: Cross multiply
    763,621.20x = 1,145,431.80 × 264,985.20
  4. Step 4: Simplify right side
    763,621.20x = 303,522,474,609.36
  5. Step 5: Solve for x
    x = 303,522,474,609.36/763,621.20
  6. Step 6: Final answer
    x = 397,477.80

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Similar ratio
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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.