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Finding the Fourth Proportional to 711,584.68, 981,968.03 and 421,211.22

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Solution

The fourth proportional to 711,584.68, 981,968.03 and 421,211.22 is: 581,260.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,584.68 : 981,968.03 = 421,211.22 : x
  2. Step 2: Convert to fraction form
    711,584.68/981,968.03 = 421,211.22/x
  3. Step 3: Cross multiply
    711,584.68x = 981,968.03 × 421,211.22
  4. Step 4: Simplify right side
    711,584.68x = 413,615,944,901.40
  5. Step 5: Solve for x
    x = 413,615,944,901.40/711,584.68
  6. Step 6: Final answer
    x = 581,260.33

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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.