Home / 711,549.38-981,961.37-389,259.48

Finding the Fourth Proportional to 711,549.38, 981,961.37 and 389,259.48

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Solution

The fourth proportional to 711,549.38, 981,961.37 and 389,259.48 is: 537,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,549.38 : 981,961.37 = 389,259.48 : x
  2. Step 2: Convert to fraction form
    711,549.38/981,961.37 = 389,259.48/x
  3. Step 3: Cross multiply
    711,549.38x = 981,961.37 × 389,259.48
  4. Step 4: Simplify right side
    711,549.38x = 382,237,770,319.99
  5. Step 5: Solve for x
    x = 382,237,770,319.99/711,549.38
  6. Step 6: Final answer
    x = 537,190.79

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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.