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Finding the Fourth Proportional to 695,337.63, 959,520.24 and 389,343.86

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Solution

The fourth proportional to 695,337.63, 959,520.24 and 389,343.86 is: 537,268.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,337.63 : 959,520.24 = 389,343.86 : x
  2. Step 2: Convert to fraction form
    695,337.63/959,520.24 = 389,343.86/x
  3. Step 3: Cross multiply
    695,337.63x = 959,520.24 × 389,343.86
  4. Step 4: Simplify right side
    695,337.63x = 373,583,313,989.73
  5. Step 5: Solve for x
    x = 373,583,313,989.73/695,337.63
  6. Step 6: Final answer
    x = 537,268.94

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Double scale
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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.