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Finding the Fourth Proportional to 486,542.40, 729,995.04 and 297,391.20

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Solution

The fourth proportional to 486,542.40, 729,995.04 and 297,391.20 is: 446,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,542.40 : 729,995.04 = 297,391.20 : x
  2. Step 2: Convert to fraction form
    486,542.40/729,995.04 = 297,391.20/x
  3. Step 3: Cross multiply
    486,542.40x = 729,995.04 × 297,391.20
  4. Step 4: Simplify right side
    486,542.40x = 217,094,100,939.65
  5. Step 5: Solve for x
    x = 217,094,100,939.65/486,542.40
  6. Step 6: Final answer
    x = 446,197.70

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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.