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Finding the Fourth Proportional to 5,387,498.64, 8,078,869.80 and 2,019,343.68

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Solution

The fourth proportional to 5,387,498.64, 8,078,869.80 and 2,019,343.68 is: 3,028,124.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387,498.64 : 8,078,869.80 = 2,019,343.68 : x
  2. Step 2: Convert to fraction form
    5,387,498.64/8,078,869.80 = 2,019,343.68/x
  3. Step 3: Cross multiply
    5,387,498.64x = 8,078,869.80 × 2,019,343.68
  4. Step 4: Simplify right side
    5,387,498.64x = 16,314,014,672,172.86
  5. Step 5: Solve for x
    x = 16,314,014,672,172.86/5,387,498.64
  6. Step 6: Final answer
    x = 3,028,124.14

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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.