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Finding the Fourth Proportional to 1,294,934.40, 1,942,401.60 and 665,078.40

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Solution

The fourth proportional to 1,294,934.40, 1,942,401.60 and 665,078.40 is: 997,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,934.40 : 1,942,401.60 = 665,078.40 : x
  2. Step 2: Convert to fraction form
    1,294,934.40/1,942,401.60 = 665,078.40/x
  3. Step 3: Cross multiply
    1,294,934.40x = 1,942,401.60 × 665,078.40
  4. Step 4: Simplify right side
    1,294,934.40x = 1,291,849,348,285.44
  5. Step 5: Solve for x
    x = 1,291,849,348,285.44/1,294,934.40
  6. Step 6: Final answer
    x = 997,617.60

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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.