Home / 522,031,077.91-720,388,521.21-287,081,738.38

Finding the Fourth Proportional to 522,031,077.91, 720,388,521.21 and 287,081,738.38

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Solution

The fourth proportional to 522,031,077.91, 720,388,521.21 and 287,081,738.38 is: 396,164,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,031,077.91 : 720,388,521.21 = 287,081,738.38 : x
  2. Step 2: Convert to fraction form
    522,031,077.91/720,388,521.21 = 287,081,738.38/x
  3. Step 3: Cross multiply
    522,031,077.91x = 720,388,521.21 × 287,081,738.38
  4. Step 4: Simplify right side
    522,031,077.91x = 206,810,388,977,964,320
  5. Step 5: Solve for x
    x = 206,810,388,977,964,320/522,031,077.91
  6. Step 6: Final answer
    x = 396,164,898.47

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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.