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Finding the Fourth Proportional to 480,013.70, 720,365.00 and 280,395.27

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Solution

The fourth proportional to 480,013.70, 720,365.00 and 280,395.27 is: 420,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,013.70 : 720,365.00 = 280,395.27 : x
  2. Step 2: Convert to fraction form
    480,013.70/720,365.00 = 280,395.27/x
  3. Step 3: Cross multiply
    480,013.70x = 720,365.00 × 280,395.27
  4. Step 4: Simplify right side
    480,013.70x = 201,986,937,271.57
  5. Step 5: Solve for x
    x = 201,986,937,271.57/480,013.70
  6. Step 6: Final answer
    x = 420,794.11

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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.