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Finding the Fourth Proportional to 978,990.90, 1,468,926.91 and 529,185.14

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Solution

The fourth proportional to 978,990.90, 1,468,926.91 and 529,185.14 is: 794,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,990.90 : 1,468,926.91 = 529,185.14 : x
  2. Step 2: Convert to fraction form
    978,990.90/1,468,926.91 = 529,185.14/x
  3. Step 3: Cross multiply
    978,990.90x = 1,468,926.91 × 529,185.14
  4. Step 4: Simplify right side
    978,990.90x = 777,334,299,317.40
  5. Step 5: Solve for x
    x = 777,334,299,317.40/978,990.90
  6. Step 6: Final answer
    x = 794,015.86

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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.