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Finding the Fourth Proportional to 545,480.40, 818,418 and 279,366.24

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Solution

The fourth proportional to 545,480.40, 818,418 and 279,366.24 is: 419,150.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,480.40 : 818,418 = 279,366.24 : x
  2. Step 2: Convert to fraction form
    545,480.40/818,418 = 279,366.24/x
  3. Step 3: Cross multiply
    545,480.40x = 818,418 × 279,366.24
  4. Step 4: Simplify right side
    545,480.40x = 228,638,359,408.32
  5. Step 5: Solve for x
    x = 228,638,359,408.32/545,480.40
  6. Step 6: Final answer
    x = 419,150.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.