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Finding the Fourth Proportional to 2,982,823.60, 4,474,235.40 and 988,279.60

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Solution

The fourth proportional to 2,982,823.60, 4,474,235.40 and 988,279.60 is: 1,482,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982,823.60 : 4,474,235.40 = 988,279.60 : x
  2. Step 2: Convert to fraction form
    2,982,823.60/4,474,235.40 = 988,279.60/x
  3. Step 3: Cross multiply
    2,982,823.60x = 4,474,235.40 × 988,279.60
  4. Step 4: Simplify right side
    2,982,823.60x = 4,421,795,571,417.84
  5. Step 5: Solve for x
    x = 4,421,795,571,417.84/2,982,823.60
  6. Step 6: Final answer
    x = 1,482,419.40

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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.