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Finding the Fourth Proportional to 472,393,367.70, 708,590,051.55 and 426,476,865.30

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Solution

The fourth proportional to 472,393,367.70, 708,590,051.55 and 426,476,865.30 is: 639,715,297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,393,367.70 : 708,590,051.55 = 426,476,865.30 : x
  2. Step 2: Convert to fraction form
    472,393,367.70/708,590,051.55 = 426,476,865.30/x
  3. Step 3: Cross multiply
    472,393,367.70x = 708,590,051.55 × 426,476,865.30
  4. Step 4: Simplify right side
    472,393,367.70x = 302,197,263,967,809,408
  5. Step 5: Solve for x
    x = 302,197,263,967,809,408/472,393,367.70
  6. Step 6: Final answer
    x = 639,715,297.95

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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.