Home / 486,220.55-671,072.20-289,999.62

Finding the Fourth Proportional to 486,220.55, 671,072.20 and 289,999.62

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Solution

The fourth proportional to 486,220.55, 671,072.20 and 289,999.62 is: 400,251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,220.55 : 671,072.20 = 289,999.62 : x
  2. Step 2: Convert to fraction form
    486,220.55/671,072.20 = 289,999.62/x
  3. Step 3: Cross multiply
    486,220.55x = 671,072.20 × 289,999.62
  4. Step 4: Simplify right side
    486,220.55x = 194,610,682,267.57
  5. Step 5: Solve for x
    x = 194,610,682,267.57/486,220.55
  6. Step 6: Final answer
    x = 400,251.87

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1.5x scale

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.