Home / 766,321.20-1,150,000.20-429,361.20

Finding the Fourth Proportional to 766,321.20, 1,150,000.20 and 429,361.20

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Solution

The fourth proportional to 766,321.20, 1,150,000.20 and 429,361.20 is: 644,332.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,321.20 : 1,150,000.20 = 429,361.20 : x
  2. Step 2: Convert to fraction form
    766,321.20/1,150,000.20 = 429,361.20/x
  3. Step 3: Cross multiply
    766,321.20x = 1,150,000.20 × 429,361.20
  4. Step 4: Simplify right side
    766,321.20x = 493,765,465,872.24
  5. Step 5: Solve for x
    x = 493,765,465,872.24/766,321.20
  6. Step 6: Final answer
    x = 644,332.25

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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.