Home / 6,320,688.72-8,722,532.90-3,420,128.92

Finding the Fourth Proportional to 6,320,688.72, 8,722,532.90 and 3,420,128.92

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Solution

The fourth proportional to 6,320,688.72, 8,722,532.90 and 3,420,128.92 is: 4,719,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,320,688.72 : 8,722,532.90 = 3,420,128.92 : x
  2. Step 2: Convert to fraction form
    6,320,688.72/8,722,532.90 = 3,420,128.92/x
  3. Step 3: Cross multiply
    6,320,688.72x = 8,722,532.90 × 3,420,128.92
  4. Step 4: Simplify right side
    6,320,688.72x = 29,832,187,026,941.47
  5. Step 5: Solve for x
    x = 29,832,187,026,941.47/6,320,688.72
  6. Step 6: Final answer
    x = 4,719,768.42

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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.