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Finding the Fourth Proportional to 7,880,898.80, 11,821,348.20 and 1,897,266.80

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Solution

The fourth proportional to 7,880,898.80, 11,821,348.20 and 1,897,266.80 is: 2,845,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880,898.80 : 11,821,348.20 = 1,897,266.80 : x
  2. Step 2: Convert to fraction form
    7,880,898.80/11,821,348.20 = 1,897,266.80/x
  3. Step 3: Cross multiply
    7,880,898.80x = 11,821,348.20 × 1,897,266.80
  4. Step 4: Simplify right side
    7,880,898.80x = 22,428,251,471,099.76
  5. Step 5: Solve for x
    x = 22,428,251,471,099.76/7,880,898.80
  6. Step 6: Final answer
    x = 2,845,900.20

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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.