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Finding the Fourth Proportional to 695,287.72, 959,549.52 and 389,348.56

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Solution

The fourth proportional to 695,287.72, 959,549.52 and 389,348.56 is: 537,330.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,287.72 : 959,549.52 = 389,348.56 : x
  2. Step 2: Convert to fraction form
    695,287.72/959,549.52 = 389,348.56/x
  3. Step 3: Cross multiply
    695,287.72x = 959,549.52 × 389,348.56
  4. Step 4: Simplify right side
    695,287.72x = 373,599,223,860.69
  5. Step 5: Solve for x
    x = 373,599,223,860.69/695,287.72
  6. Step 6: Final answer
    x = 537,330.39

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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.