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Finding the Fourth Proportional to 6,321,567.78, 8,723,763.24 and 3,420,958.32

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Solution

The fourth proportional to 6,321,567.78, 8,723,763.24 and 3,420,958.32 is: 4,720,922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321,567.78 : 8,723,763.24 = 3,420,958.32 : x
  2. Step 2: Convert to fraction form
    6,321,567.78/8,723,763.24 = 3,420,958.32/x
  3. Step 3: Cross multiply
    6,321,567.78x = 8,723,763.24 × 3,420,958.32
  4. Step 4: Simplify right side
    6,321,567.78x = 29,843,630,437,588.16
  5. Step 5: Solve for x
    x = 29,843,630,437,588.16/6,321,567.78
  6. Step 6: Final answer
    x = 4,720,922.32

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1.5x scale

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.