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Finding the Fourth Proportional to 978,051.90, 1,467,077.85 and 810,090.30

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Solution

The fourth proportional to 978,051.90, 1,467,077.85 and 810,090.30 is: 1,215,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,051.90 : 1,467,077.85 = 810,090.30 : x
  2. Step 2: Convert to fraction form
    978,051.90/1,467,077.85 = 810,090.30/x
  3. Step 3: Cross multiply
    978,051.90x = 1,467,077.85 × 810,090.30
  4. Step 4: Simplify right side
    978,051.90x = 1,188,465,535,629.86
  5. Step 5: Solve for x
    x = 1,188,465,535,629.86/978,051.90
  6. Step 6: Final answer
    x = 1,215,135.45

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Similar ratio
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1.5x scale

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.