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Finding the Fourth Proportional to 11,657,985.70, 17,486,978.55 and 3,679,809.70

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Solution

The fourth proportional to 11,657,985.70, 17,486,978.55 and 3,679,809.70 is: 5,519,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,657,985.70 : 17,486,978.55 = 3,679,809.70 : x
  2. Step 2: Convert to fraction form
    11,657,985.70/17,486,978.55 = 3,679,809.70/x
  3. Step 3: Cross multiply
    11,657,985.70x = 17,486,978.55 × 3,679,809.70
  4. Step 4: Simplify right side
    11,657,985.70x = 64,348,753,291,981.94
  5. Step 5: Solve for x
    x = 64,348,753,291,981.94/11,657,985.70
  6. Step 6: Final answer
    x = 5,519,714.55

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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.