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Finding the Fourth Proportional to 413,753,413,420.80, 620,630,120,131.20 and 413,753,413,420.80

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Solution

The fourth proportional to 413,753,413,420.80, 620,630,120,131.20 and 413,753,413,420.80 is: 620,630,120,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,753,413,420.80 : 620,630,120,131.20 = 413,753,413,420.80 : x
  2. Step 2: Convert to fraction form
    413,753,413,420.80/620,630,120,131.20 = 413,753,413,420.80/x
  3. Step 3: Cross multiply
    413,753,413,420.80x = 620,630,120,131.20 × 413,753,413,420.80
  4. Step 4: Simplify right side
    413,753,413,420.80x = 256,787,830,676,045,132,988,416
  5. Step 5: Solve for x
    x = 256,787,830,676,045,132,988,416/413,753,413,420.80
  6. Step 6: Final answer
    x = 620,630,120,131.20

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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.