Home / 7,742,997.78-10,684,781.28-4,258,578.21

Finding the Fourth Proportional to 7,742,997.78, 10,684,781.28 and 4,258,578.21

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Solution

The fourth proportional to 7,742,997.78, 10,684,781.28 and 4,258,578.21 is: 5,876,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742,997.78 : 10,684,781.28 = 4,258,578.21 : x
  2. Step 2: Convert to fraction form
    7,742,997.78/10,684,781.28 = 4,258,578.21/x
  3. Step 3: Cross multiply
    7,742,997.78x = 10,684,781.28 × 4,258,578.21
  4. Step 4: Simplify right side
    7,742,997.78x = 45,501,976,737,623.91
  5. Step 5: Solve for x
    x = 45,501,976,737,623.91/7,742,997.78
  6. Step 6: Final answer
    x = 5,876,532.32

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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.