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Finding the Fourth Proportional to 695,308.76, 959,578.50 and 389,369.56

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Solution

The fourth proportional to 695,308.76, 959,578.50 and 389,369.56 is: 537,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,308.76 : 959,578.50 = 389,369.56 : x
  2. Step 2: Convert to fraction form
    695,308.76/959,578.50 = 389,369.56/x
  3. Step 3: Cross multiply
    695,308.76x = 959,578.50 × 389,369.56
  4. Step 4: Simplify right side
    695,308.76x = 373,630,658,330.46
  5. Step 5: Solve for x
    x = 373,630,658,330.46/695,308.76
  6. Step 6: Final answer
    x = 537,359.34

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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.