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Finding the Fourth Proportional to 1,318,888.10, 1,978,850.55 and 520,033.70

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Solution

The fourth proportional to 1,318,888.10, 1,978,850.55 and 520,033.70 is: 780,254.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,888.10 : 1,978,850.55 = 520,033.70 : x
  2. Step 2: Convert to fraction form
    1,318,888.10/1,978,850.55 = 520,033.70/x
  3. Step 3: Cross multiply
    1,318,888.10x = 1,978,850.55 × 520,033.70
  4. Step 4: Simplify right side
    1,318,888.10x = 1,029,068,973,263.54
  5. Step 5: Solve for x
    x = 1,029,068,973,263.54/1,318,888.10
  6. Step 6: Final answer
    x = 780,254.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.