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Finding the Fourth Proportional to 978,189.44, 1,349,884.30 and 548,468.24

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Solution

The fourth proportional to 978,189.44, 1,349,884.30 and 548,468.24 is: 756,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,189.44 : 1,349,884.30 = 548,468.24 : x
  2. Step 2: Convert to fraction form
    978,189.44/1,349,884.30 = 548,468.24/x
  3. Step 3: Cross multiply
    978,189.44x = 1,349,884.30 × 548,468.24
  4. Step 4: Simplify right side
    978,189.44x = 740,368,666,224.63
  5. Step 5: Solve for x
    x = 740,368,666,224.63/978,189.44
  6. Step 6: Final answer
    x = 756,876.57

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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.