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Finding the Fourth Proportional to 647,193,033.38, 893,126,000.69 and 349,835,279.50

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Solution

The fourth proportional to 647,193,033.38, 893,126,000.69 and 349,835,279.50 is: 482,772,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,193,033.38 : 893,126,000.69 = 349,835,279.50 : x
  2. Step 2: Convert to fraction form
    647,193,033.38/893,126,000.69 = 349,835,279.50/x
  3. Step 3: Cross multiply
    647,193,033.38x = 893,126,000.69 × 349,835,279.50
  4. Step 4: Simplify right side
    647,193,033.38x = 312,446,984,080,782,464
  5. Step 5: Solve for x
    x = 312,446,984,080,782,464/647,193,033.38
  6. Step 6: Final answer
    x = 482,772,477.40

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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.