Home / 720,979.91-1,082,119.89-384,300.98

Finding the Fourth Proportional to 720,979.91, 1,082,119.89 and 384,300.98

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Solution

The fourth proportional to 720,979.91, 1,082,119.89 and 384,300.98 is: 576,797.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,979.91 : 1,082,119.89 = 384,300.98 : x
  2. Step 2: Convert to fraction form
    720,979.91/1,082,119.89 = 384,300.98/x
  3. Step 3: Cross multiply
    720,979.91x = 1,082,119.89 × 384,300.98
  4. Step 4: Simplify right side
    720,979.91x = 415,859,734,204.49
  5. Step 5: Solve for x
    x = 415,859,734,204.49/720,979.91
  6. Step 6: Final answer
    x = 576,797.95

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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.