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Finding the Fourth Proportional to 978,522.12, 1,349,110.80 and 633,749.04

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Solution

The fourth proportional to 978,522.12, 1,349,110.80 and 633,749.04 is: 873,764.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,522.12 : 1,349,110.80 = 633,749.04 : x
  2. Step 2: Convert to fraction form
    978,522.12/1,349,110.80 = 633,749.04/x
  3. Step 3: Cross multiply
    978,522.12x = 1,349,110.80 × 633,749.04
  4. Step 4: Simplify right side
    978,522.12x = 854,997,674,353.63
  5. Step 5: Solve for x
    x = 854,997,674,353.63/978,522.12
  6. Step 6: Final answer
    x = 873,764.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.