Home / 711,156.22-981,206.45-405,226.05

Finding the Fourth Proportional to 711,156.22, 981,206.45 and 405,226.05

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Solution

The fourth proportional to 711,156.22, 981,206.45 and 405,226.05 is: 559,104.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,156.22 : 981,206.45 = 405,226.05 : x
  2. Step 2: Convert to fraction form
    711,156.22/981,206.45 = 405,226.05/x
  3. Step 3: Cross multiply
    711,156.22x = 981,206.45 × 405,226.05
  4. Step 4: Simplify right side
    711,156.22x = 397,610,413,968.02
  5. Step 5: Solve for x
    x = 397,610,413,968.02/711,156.22
  6. Step 6: Final answer
    x = 559,104.18

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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.