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Finding the Fourth Proportional to 978,599.40, 1,467,546.93 and 338,729.28

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Solution

The fourth proportional to 978,599.40, 1,467,546.93 and 338,729.28 is: 507,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,599.40 : 1,467,546.93 = 338,729.28 : x
  2. Step 2: Convert to fraction form
    978,599.40/1,467,546.93 = 338,729.28/x
  3. Step 3: Cross multiply
    978,599.40x = 1,467,546.93 × 338,729.28
  4. Step 4: Simplify right side
    978,599.40x = 497,101,114,965.11
  5. Step 5: Solve for x
    x = 497,101,114,965.11/978,599.40
  6. Step 6: Final answer
    x = 507,972.02

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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.