Home / 691,856,428.61-954,761,833.19-378,590,680.37

Finding the Fourth Proportional to 691,856,428.61, 954,761,833.19 and 378,590,680.37

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Solution

The fourth proportional to 691,856,428.61, 954,761,833.19 and 378,590,680.37 is: 522,455,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,856,428.61 : 954,761,833.19 = 378,590,680.37 : x
  2. Step 2: Convert to fraction form
    691,856,428.61/954,761,833.19 = 378,590,680.37/x
  3. Step 3: Cross multiply
    691,856,428.61x = 954,761,833.19 × 378,590,680.37
  4. Step 4: Simplify right side
    691,856,428.61x = 361,463,932,016,817,600
  5. Step 5: Solve for x
    x = 361,463,932,016,817,600/691,856,428.61
  6. Step 6: Final answer
    x = 522,455,117.95

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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.