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Finding the Fourth Proportional to 695,144.55, 959,272.90 and 389,192.31

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Solution

The fourth proportional to 695,144.55, 959,272.90 and 389,192.31 is: 537,070.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,144.55 : 959,272.90 = 389,192.31 : x
  2. Step 2: Convert to fraction form
    695,144.55/959,272.90 = 389,192.31/x
  3. Step 3: Cross multiply
    695,144.55x = 959,272.90 × 389,192.31
  4. Step 4: Simplify right side
    695,144.55x = 373,341,635,871.40
  5. Step 5: Solve for x
    x = 373,341,635,871.40/695,144.55
  6. Step 6: Final answer
    x = 537,070.51

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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.