Home / 439,937.20-659,905.80-329,345.20

Finding the Fourth Proportional to 439,937.20, 659,905.80 and 329,345.20

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Solution

The fourth proportional to 439,937.20, 659,905.80 and 329,345.20 is: 494,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,937.20 : 659,905.80 = 329,345.20 : x
  2. Step 2: Convert to fraction form
    439,937.20/659,905.80 = 329,345.20/x
  3. Step 3: Cross multiply
    439,937.20x = 659,905.80 × 329,345.20
  4. Step 4: Simplify right side
    439,937.20x = 217,336,807,682.16
  5. Step 5: Solve for x
    x = 217,336,807,682.16/439,937.20
  6. Step 6: Final answer
    x = 494,017.80

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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.