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Finding the Fourth Proportional to 483,791.40, 678,007.80 and 483,791.40

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Solution

The fourth proportional to 483,791.40, 678,007.80 and 483,791.40 is: 678,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,791.40 : 678,007.80 = 483,791.40 : x
  2. Step 2: Convert to fraction form
    483,791.40/678,007.80 = 483,791.40/x
  3. Step 3: Cross multiply
    483,791.40x = 678,007.80 × 483,791.40
  4. Step 4: Simplify right side
    483,791.40x = 328,014,342,772.92
  5. Step 5: Solve for x
    x = 328,014,342,772.92/483,791.40
  6. Step 6: Final answer
    x = 678,007.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.