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Finding the Fourth Proportional to 7,088,973.94, 9,781,493.61 and 3,991,015.54

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Solution

The fourth proportional to 7,088,973.94, 9,781,493.61 and 3,991,015.54 is: 5,506,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,088,973.94 : 9,781,493.61 = 3,991,015.54 : x
  2. Step 2: Convert to fraction form
    7,088,973.94/9,781,493.61 = 3,991,015.54/x
  3. Step 3: Cross multiply
    7,088,973.94x = 9,781,493.61 × 3,991,015.54
  4. Step 4: Simplify right side
    7,088,973.94x = 39,038,093,001,920.70
  5. Step 5: Solve for x
    x = 39,038,093,001,920.70/7,088,973.94
  6. Step 6: Final answer
    x = 5,506,874.95

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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.