Home / 711,516,232.80-981,882,219.24-393,946,051.68

Finding the Fourth Proportional to 711,516,232.80, 981,882,219.24 and 393,946,051.68

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Solution

The fourth proportional to 711,516,232.80, 981,882,219.24 and 393,946,051.68 is: 543,639,913.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,516,232.80 : 981,882,219.24 = 393,946,051.68 : x
  2. Step 2: Convert to fraction form
    711,516,232.80/981,882,219.24 = 393,946,051.68/x
  3. Step 3: Cross multiply
    711,516,232.80x = 981,882,219.24 × 393,946,051.68
  4. Step 4: Simplify right side
    711,516,232.80x = 386,808,623,484,394,112
  5. Step 5: Solve for x
    x = 386,808,623,484,394,112/711,516,232.80
  6. Step 6: Final answer
    x = 543,639,913.82

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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.