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Finding the Fourth Proportional to 978,246.40, 1,466,640.60 and 505,271.20

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Solution

The fourth proportional to 978,246.40, 1,466,640.60 and 505,271.20 is: 757,530.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,246.40 : 1,466,640.60 = 505,271.20 : x
  2. Step 2: Convert to fraction form
    978,246.40/1,466,640.60 = 505,271.20/x
  3. Step 3: Cross multiply
    978,246.40x = 1,466,640.60 × 505,271.20
  4. Step 4: Simplify right side
    978,246.40x = 741,051,255,930.72
  5. Step 5: Solve for x
    x = 741,051,255,930.72/978,246.40
  6. Step 6: Final answer
    x = 757,530.27

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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.