Home / 378,897,545.82-522,873,093.99-211,636,187.10

Finding the Fourth Proportional to 378,897,545.82, 522,873,093.99 and 211,636,187.10

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Solution

The fourth proportional to 378,897,545.82, 522,873,093.99 and 211,636,187.10 is: 292,054,855.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,897,545.82 : 522,873,093.99 = 211,636,187.10 : x
  2. Step 2: Convert to fraction form
    378,897,545.82/522,873,093.99 = 211,636,187.10/x
  3. Step 3: Cross multiply
    378,897,545.82x = 522,873,093.99 × 211,636,187.10
  4. Step 4: Simplify right side
    378,897,545.82x = 110,658,867,949,223,520
  5. Step 5: Solve for x
    x = 110,658,867,949,223,520/378,897,545.82
  6. Step 6: Final answer
    x = 292,054,855.38

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1.5x scale

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.