Home / 449,746.17-620,589.74-288,819.20

Finding the Fourth Proportional to 449,746.17, 620,589.74 and 288,819.20

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Solution

The fourth proportional to 449,746.17, 620,589.74 and 288,819.20 is: 398,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,746.17 : 620,589.74 = 288,819.20 : x
  2. Step 2: Convert to fraction form
    449,746.17/620,589.74 = 288,819.20/x
  3. Step 3: Cross multiply
    449,746.17x = 620,589.74 × 288,819.20
  4. Step 4: Simplify right side
    449,746.17x = 179,238,227,687.96
  5. Step 5: Solve for x
    x = 179,238,227,687.96/449,746.17
  6. Step 6: Final answer
    x = 398,531.97

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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.