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Finding the Fourth Proportional to 449,703.56, 620,880.26 and 288,628.04

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Solution

The fourth proportional to 449,703.56, 620,880.26 and 288,628.04 is: 398,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,703.56 : 620,880.26 = 288,628.04 : x
  2. Step 2: Convert to fraction form
    449,703.56/620,880.26 = 288,628.04/x
  3. Step 3: Cross multiply
    449,703.56x = 620,880.26 × 288,628.04
  4. Step 4: Simplify right side
    449,703.56x = 179,203,452,518.49
  5. Step 5: Solve for x
    x = 179,203,452,518.49/449,703.56
  6. Step 6: Final answer
    x = 398,492.40

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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.