Home / 629,208,693.87-868,410,275.90-378,566,421.63

Finding the Fourth Proportional to 629,208,693.87, 868,410,275.90 and 378,566,421.63

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Solution

The fourth proportional to 629,208,693.87, 868,410,275.90 and 378,566,421.63 is: 522,483,198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,208,693.87 : 868,410,275.90 = 378,566,421.63 : x
  2. Step 2: Convert to fraction form
    629,208,693.87/868,410,275.90 = 378,566,421.63/x
  3. Step 3: Cross multiply
    629,208,693.87x = 868,410,275.90 × 378,566,421.63
  4. Step 4: Simplify right side
    629,208,693.87x = 328,750,970,654,184,000
  5. Step 5: Solve for x
    x = 328,750,970,654,184,000/629,208,693.87
  6. Step 6: Final answer
    x = 522,483,198.11

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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.