Home / 486,972.89-672,089.33-280,237.03

Finding the Fourth Proportional to 486,972.89, 672,089.33 and 280,237.03

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Solution

The fourth proportional to 486,972.89, 672,089.33 and 280,237.03 is: 386,765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,972.89 : 672,089.33 = 280,237.03 : x
  2. Step 2: Convert to fraction form
    486,972.89/672,089.33 = 280,237.03/x
  3. Step 3: Cross multiply
    486,972.89x = 672,089.33 × 280,237.03
  4. Step 4: Simplify right side
    486,972.89x = 188,344,316,754.26
  5. Step 5: Solve for x
    x = 188,344,316,754.26/486,972.89
  6. Step 6: Final answer
    x = 386,765.51

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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.