Home / 486,345,738.72-729,514,031.76-210,192,206.88

Finding the Fourth Proportional to 486,345,738.72, 729,514,031.76 and 210,192,206.88

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Solution

The fourth proportional to 486,345,738.72, 729,514,031.76 and 210,192,206.88 is: 315,286,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,345,738.72 : 729,514,031.76 = 210,192,206.88 : x
  2. Step 2: Convert to fraction form
    486,345,738.72/729,514,031.76 = 210,192,206.88/x
  3. Step 3: Cross multiply
    486,345,738.72x = 729,514,031.76 × 210,192,206.88
  4. Step 4: Simplify right side
    486,345,738.72x = 153,338,164,285,560,800
  5. Step 5: Solve for x
    x = 153,338,164,285,560,800/486,345,738.72
  6. Step 6: Final answer
    x = 315,286,332.49

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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.