Home / 480,583.62-720,918.48-139,021.68

Finding the Fourth Proportional to 480,583.62, 720,918.48 and 139,021.68

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Solution

The fourth proportional to 480,583.62, 720,918.48 and 139,021.68 is: 208,544.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,583.62 : 720,918.48 = 139,021.68 : x
  2. Step 2: Convert to fraction form
    480,583.62/720,918.48 = 139,021.68/x
  3. Step 3: Cross multiply
    480,583.62x = 720,918.48 × 139,021.68
  4. Step 4: Simplify right side
    480,583.62x = 100,223,294,280.50
  5. Step 5: Solve for x
    x = 100,223,294,280.50/480,583.62
  6. Step 6: Final answer
    x = 208,544.97

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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.