Home / 711,128.49-981,347.70-405,222.94

Finding the Fourth Proportional to 711,128.49, 981,347.70 and 405,222.94

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Solution

The fourth proportional to 711,128.49, 981,347.70 and 405,222.94 is: 559,202.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,128.49 : 981,347.70 = 405,222.94 : x
  2. Step 2: Convert to fraction form
    711,128.49/981,347.70 = 405,222.94/x
  3. Step 3: Cross multiply
    711,128.49x = 981,347.70 × 405,222.94
  4. Step 4: Simplify right side
    711,128.49x = 397,664,600,156.24
  5. Step 5: Solve for x
    x = 397,664,600,156.24/711,128.49
  6. Step 6: Final answer
    x = 559,202.18

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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.