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Finding the Fourth Proportional to 6,317,894.79, 8,724,009.46 and 3,998,878.33

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Solution

The fourth proportional to 6,317,894.79, 8,724,009.46 and 3,998,878.33 is: 5,521,815.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,317,894.79 : 8,724,009.46 = 3,998,878.33 : x
  2. Step 2: Convert to fraction form
    6,317,894.79/8,724,009.46 = 3,998,878.33/x
  3. Step 3: Cross multiply
    6,317,894.79x = 8,724,009.46 × 3,998,878.33
  4. Step 4: Simplify right side
    6,317,894.79x = 34,886,252,376,705.49
  5. Step 5: Solve for x
    x = 34,886,252,376,705.49/6,317,894.79
  6. Step 6: Final answer
    x = 5,521,815.98

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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.