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Finding the Fourth Proportional to 711,342.66, 981,203.90 and 496,404.30

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Solution

The fourth proportional to 711,342.66, 981,203.90 and 496,404.30 is: 684,724.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,342.66 : 981,203.90 = 496,404.30 : x
  2. Step 2: Convert to fraction form
    711,342.66/981,203.90 = 496,404.30/x
  3. Step 3: Cross multiply
    711,342.66x = 981,203.90 × 496,404.30
  4. Step 4: Simplify right side
    711,342.66x = 487,073,835,136.77
  5. Step 5: Solve for x
    x = 487,073,835,136.77/711,342.66
  6. Step 6: Final answer
    x = 684,724.62

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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.