Home / 654,220,529.40-981,339,342-217,521,213.72

Finding the Fourth Proportional to 654,220,529.40, 981,339,342 and 217,521,213.72

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Solution

The fourth proportional to 654,220,529.40, 981,339,342 and 217,521,213.72 is: 326,284,662.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,220,529.40 : 981,339,342 = 217,521,213.72 : x
  2. Step 2: Convert to fraction form
    654,220,529.40/981,339,342 = 217,521,213.72/x
  3. Step 3: Cross multiply
    654,220,529.40x = 981,339,342 × 217,521,213.72
  4. Step 4: Simplify right side
    654,220,529.40x = 213,462,124,743,026,176
  5. Step 5: Solve for x
    x = 213,462,124,743,026,176/654,220,529.40
  6. Step 6: Final answer
    x = 326,284,662.66

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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.