Home / 711,136.20-981,561.48-405,373.56

Finding the Fourth Proportional to 711,136.20, 981,561.48 and 405,373.56

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Solution

The fourth proportional to 711,136.20, 981,561.48 and 405,373.56 is: 559,525.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,136.20 : 981,561.48 = 405,373.56 : x
  2. Step 2: Convert to fraction form
    711,136.20/981,561.48 = 405,373.56/x
  3. Step 3: Cross multiply
    711,136.20x = 981,561.48 × 405,373.56
  4. Step 4: Simplify right side
    711,136.20x = 397,899,071,506.47
  5. Step 5: Solve for x
    x = 397,899,071,506.47/711,136.20
  6. Step 6: Final answer
    x = 559,525.83

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Double scale
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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.