Home / 711,111,521.16-981,335,998.73-393,593,820.49

Finding the Fourth Proportional to 711,111,521.16, 981,335,998.73 and 393,593,820.49

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Solution

The fourth proportional to 711,111,521.16, 981,335,998.73 and 393,593,820.49 is: 543,160,634.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,111,521.16 : 981,335,998.73 = 393,593,820.49 : x
  2. Step 2: Convert to fraction form
    711,111,521.16/981,335,998.73 = 393,593,820.49/x
  3. Step 3: Cross multiply
    711,111,521.16x = 981,335,998.73 × 393,593,820.49
  4. Step 4: Simplify right side
    711,111,521.16x = 386,247,784,923,041,152
  5. Step 5: Solve for x
    x = 386,247,784,923,041,152/711,111,521.16
  6. Step 6: Final answer
    x = 543,160,634.34

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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.