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Finding the Fourth Proportional to 978,588.37, 1,467,530.43 and 338,718.34

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Solution

The fourth proportional to 978,588.37, 1,467,530.43 and 338,718.34 is: 507,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,588.37 : 1,467,530.43 = 338,718.34 : x
  2. Step 2: Convert to fraction form
    978,588.37/1,467,530.43 = 338,718.34/x
  3. Step 3: Cross multiply
    978,588.37x = 1,467,530.43 × 338,718.34
  4. Step 4: Simplify right side
    978,588.37x = 497,079,471,149.09
  5. Step 5: Solve for x
    x = 497,079,471,149.09/978,588.37
  6. Step 6: Final answer
    x = 507,955.63

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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.