Home / 488,988.72-675,132.03-305,506.59

Finding the Fourth Proportional to 488,988.72, 675,132.03 and 305,506.59

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Solution

The fourth proportional to 488,988.72, 675,132.03 and 305,506.59 is: 421,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,988.72 : 675,132.03 = 305,506.59 : x
  2. Step 2: Convert to fraction form
    488,988.72/675,132.03 = 305,506.59/x
  3. Step 3: Cross multiply
    488,988.72x = 675,132.03 × 305,506.59
  4. Step 4: Simplify right side
    488,988.72x = 206,257,284,285.08
  5. Step 5: Solve for x
    x = 206,257,284,285.08/488,988.72
  6. Step 6: Final answer
    x = 421,803.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.