Home / 628,448,836.05-867,194,150.94-387,006,429.29

Finding the Fourth Proportional to 628,448,836.05, 867,194,150.94 and 387,006,429.29

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Solution

The fourth proportional to 628,448,836.05, 867,194,150.94 and 387,006,429.29 is: 534,028,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,448,836.05 : 867,194,150.94 = 387,006,429.29 : x
  2. Step 2: Convert to fraction form
    628,448,836.05/867,194,150.94 = 387,006,429.29/x
  3. Step 3: Cross multiply
    628,448,836.05x = 867,194,150.94 × 387,006,429.29
  4. Step 4: Simplify right side
    628,448,836.05x = 335,609,711,852,126,784
  5. Step 5: Solve for x
    x = 335,609,711,852,126,784/628,448,836.05
  6. Step 6: Final answer
    x = 534,028,695.10

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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.