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Finding the Fourth Proportional to 450,055.44, 620,783.80 and 288,654.84

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Solution

The fourth proportional to 450,055.44, 620,783.80 and 288,654.84 is: 398,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,055.44 : 620,783.80 = 288,654.84 : x
  2. Step 2: Convert to fraction form
    450,055.44/620,783.80 = 288,654.84/x
  3. Step 3: Cross multiply
    450,055.44x = 620,783.80 × 288,654.84
  4. Step 4: Simplify right side
    450,055.44x = 179,192,247,741.96
  5. Step 5: Solve for x
    x = 179,192,247,741.96/450,055.44
  6. Step 6: Final answer
    x = 398,155.94

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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.