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Finding the Fourth Proportional to 978,065.70, 1,467,098.55 and 853,649.70

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Solution

The fourth proportional to 978,065.70, 1,467,098.55 and 853,649.70 is: 1,280,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,065.70 : 1,467,098.55 = 853,649.70 : x
  2. Step 2: Convert to fraction form
    978,065.70/1,467,098.55 = 853,649.70/x
  3. Step 3: Cross multiply
    978,065.70x = 1,467,098.55 × 853,649.70
  4. Step 4: Simplify right side
    978,065.70x = 1,252,388,237,077.94
  5. Step 5: Solve for x
    x = 1,252,388,237,077.94/978,065.70
  6. Step 6: Final answer
    x = 1,280,474.55

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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.