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Finding the Fourth Proportional to 450,989.53, 622,129.60 and 278,852.47

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Solution

The fourth proportional to 450,989.53, 622,129.60 and 278,852.47 is: 384,670.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,989.53 : 622,129.60 = 278,852.47 : x
  2. Step 2: Convert to fraction form
    450,989.53/622,129.60 = 278,852.47/x
  3. Step 3: Cross multiply
    450,989.53x = 622,129.60 × 278,852.47
  4. Step 4: Simplify right side
    450,989.53x = 173,482,374,225.85
  5. Step 5: Solve for x
    x = 173,482,374,225.85/450,989.53
  6. Step 6: Final answer
    x = 384,670.51

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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.