Home / 711,156.81-981,207.27-405,226.65

Finding the Fourth Proportional to 711,156.81, 981,207.27 and 405,226.65

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Solution

The fourth proportional to 711,156.81, 981,207.27 and 405,226.65 is: 559,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,156.81 : 981,207.27 = 405,226.65 : x
  2. Step 2: Convert to fraction form
    711,156.81/981,207.27 = 405,226.65/x
  3. Step 3: Cross multiply
    711,156.81x = 981,207.27 × 405,226.65
  4. Step 4: Simplify right side
    711,156.81x = 397,611,334,977.75
  5. Step 5: Solve for x
    x = 397,611,334,977.75/711,156.81
  6. Step 6: Final answer
    x = 559,105.01

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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.