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Finding the Fourth Proportional to 695,074.92, 959,124.42 and 389,108.76

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Solution

The fourth proportional to 695,074.92, 959,124.42 and 389,108.76 is: 536,925.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,074.92 : 959,124.42 = 389,108.76 : x
  2. Step 2: Convert to fraction form
    695,074.92/959,124.42 = 389,108.76/x
  3. Step 3: Cross multiply
    695,074.92x = 959,124.42 × 389,108.76
  4. Step 4: Simplify right side
    695,074.92x = 373,203,713,751.92
  5. Step 5: Solve for x
    x = 373,203,713,751.92/695,074.92
  6. Step 6: Final answer
    x = 536,925.88

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Double scale
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Similar ratio
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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.