Home / 472,355,753.78-708,485,791.86-127,344,256.58

Finding the Fourth Proportional to 472,355,753.78, 708,485,791.86 and 127,344,256.58

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Solution

The fourth proportional to 472,355,753.78, 708,485,791.86 and 127,344,256.58 is: 191,003,487.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,355,753.78 : 708,485,791.86 = 127,344,256.58 : x
  2. Step 2: Convert to fraction form
    472,355,753.78/708,485,791.86 = 127,344,256.58/x
  3. Step 3: Cross multiply
    472,355,753.78x = 708,485,791.86 × 127,344,256.58
  4. Step 4: Simplify right side
    472,355,753.78x = 90,221,596,458,361,888
  5. Step 5: Solve for x
    x = 90,221,596,458,361,888/472,355,753.78
  6. Step 6: Final answer
    x = 191,003,487.81

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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.