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Finding the Fourth Proportional to 978,296.10, 1,467,444.15 and 694,860.90

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Solution

The fourth proportional to 978,296.10, 1,467,444.15 and 694,860.90 is: 1,042,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,296.10 : 1,467,444.15 = 694,860.90 : x
  2. Step 2: Convert to fraction form
    978,296.10/1,467,444.15 = 694,860.90/x
  3. Step 3: Cross multiply
    978,296.10x = 1,467,444.15 × 694,860.90
  4. Step 4: Simplify right side
    978,296.10x = 1,019,669,562,768.74
  5. Step 5: Solve for x
    x = 1,019,669,562,768.74/978,296.10
  6. Step 6: Final answer
    x = 1,042,291.35

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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.