Home / 6,420,668.79-8,860,520.43-3,519,997.50

Finding the Fourth Proportional to 6,420,668.79, 8,860,520.43 and 3,519,997.50

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Solution

The fourth proportional to 6,420,668.79, 8,860,520.43 and 3,519,997.50 is: 4,857,595.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420,668.79 : 8,860,520.43 = 3,519,997.50 : x
  2. Step 2: Convert to fraction form
    6,420,668.79/8,860,520.43 = 3,519,997.50/x
  3. Step 3: Cross multiply
    6,420,668.79x = 8,860,520.43 × 3,519,997.50
  4. Step 4: Simplify right side
    6,420,668.79x = 31,189,009,762,298.93
  5. Step 5: Solve for x
    x = 31,189,009,762,298.93/6,420,668.79
  6. Step 6: Final answer
    x = 4,857,595.18

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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.