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Finding the Fourth Proportional to 1,312,626, 1,811,424.60 and 709,014

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Solution

The fourth proportional to 1,312,626, 1,811,424.60 and 709,014 is: 978,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,626 : 1,811,424.60 = 709,014 : x
  2. Step 2: Convert to fraction form
    1,312,626/1,811,424.60 = 709,014/x
  3. Step 3: Cross multiply
    1,312,626x = 1,811,424.60 × 709,014
  4. Step 4: Simplify right side
    1,312,626x = 1,284,325,401,344.40
  5. Step 5: Solve for x
    x = 1,284,325,401,344.40/1,312,626
  6. Step 6: Final answer
    x = 978,439.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.