Home / 520,072,872.49-717,700,390.80-285,118,488.37

Finding the Fourth Proportional to 520,072,872.49, 717,700,390.80 and 285,118,488.37

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Solution

The fourth proportional to 520,072,872.49, 717,700,390.80 and 285,118,488.37 is: 393,463,418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072,872.49 : 717,700,390.80 = 285,118,488.37 : x
  2. Step 2: Convert to fraction form
    520,072,872.49/717,700,390.80 = 285,118,488.37/x
  3. Step 3: Cross multiply
    520,072,872.49x = 717,700,390.80 × 285,118,488.37
  4. Step 4: Simplify right side
    520,072,872.49x = 204,629,650,523,865,760
  5. Step 5: Solve for x
    x = 204,629,650,523,865,760/520,072,872.49
  6. Step 6: Final answer
    x = 393,463,418.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.