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Finding the Fourth Proportional to 978,554.95, 1,468,206.06 and 379,936.42

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Solution

The fourth proportional to 978,554.95, 1,468,206.06 and 379,936.42 is: 570,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,554.95 : 1,468,206.06 = 379,936.42 : x
  2. Step 2: Convert to fraction form
    978,554.95/1,468,206.06 = 379,936.42/x
  3. Step 3: Cross multiply
    978,554.95x = 1,468,206.06 × 379,936.42
  4. Step 4: Simplify right side
    978,554.95x = 557,824,954,258.71
  5. Step 5: Solve for x
    x = 557,824,954,258.71/978,554.95
  6. Step 6: Final answer
    x = 570,049.70

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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.