Home / 449,749.45-620,594.28-288,822.48

Finding the Fourth Proportional to 449,749.45, 620,594.28 and 288,822.48

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Solution

The fourth proportional to 449,749.45, 620,594.28 and 288,822.48 is: 398,536.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,749.45 : 620,594.28 = 288,822.48 : x
  2. Step 2: Convert to fraction form
    449,749.45/620,594.28 = 288,822.48/x
  3. Step 3: Cross multiply
    449,749.45x = 620,594.28 × 288,822.48
  4. Step 4: Simplify right side
    449,749.45x = 179,241,577,508.50
  5. Step 5: Solve for x
    x = 179,241,577,508.50/449,749.45
  6. Step 6: Final answer
    x = 398,536.51

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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.