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Finding the Fourth Proportional to 7,908,998.40, 11,862,806.40 and 2,590,214.40

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Solution

The fourth proportional to 7,908,998.40, 11,862,806.40 and 2,590,214.40 is: 3,885,095.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908,998.40 : 11,862,806.40 = 2,590,214.40 : x
  2. Step 2: Convert to fraction form
    7,908,998.40/11,862,806.40 = 2,590,214.40/x
  3. Step 3: Cross multiply
    7,908,998.40x = 11,862,806.40 × 2,590,214.40
  4. Step 4: Simplify right side
    7,908,998.40x = 30,727,211,961,692.16
  5. Step 5: Solve for x
    x = 30,727,211,961,692.16/7,908,998.40
  6. Step 6: Final answer
    x = 3,885,095.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.