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Finding the Fourth Proportional to 3,955,592.64, 5,933,388.72 and 1,430,657.28

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Solution

The fourth proportional to 3,955,592.64, 5,933,388.72 and 1,430,657.28 is: 2,145,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955,592.64 : 5,933,388.72 = 1,430,657.28 : x
  2. Step 2: Convert to fraction form
    3,955,592.64/5,933,388.72 = 1,430,657.28/x
  3. Step 3: Cross multiply
    3,955,592.64x = 5,933,388.72 × 1,430,657.28
  4. Step 4: Simplify right side
    3,955,592.64x = 8,488,645,767,337.88
  5. Step 5: Solve for x
    x = 8,488,645,767,337.88/3,955,592.64
  6. Step 6: Final answer
    x = 2,145,985.83

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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.