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Finding the Fourth Proportional to 978,068.70, 1,467,103.05 and 853,652.70

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Solution

The fourth proportional to 978,068.70, 1,467,103.05 and 853,652.70 is: 1,280,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,068.70 : 1,467,103.05 = 853,652.70 : x
  2. Step 2: Convert to fraction form
    978,068.70/1,467,103.05 = 853,652.70/x
  3. Step 3: Cross multiply
    978,068.70x = 1,467,103.05 × 853,652.70
  4. Step 4: Simplify right side
    978,068.70x = 1,252,396,479,810.73
  5. Step 5: Solve for x
    x = 1,252,396,479,810.73/978,068.70
  6. Step 6: Final answer
    x = 1,280,479.05

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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.