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Finding the Fourth Proportional to 449,622.01, 620,056.60 and 288,527.77

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Solution

The fourth proportional to 449,622.01, 620,056.60 and 288,527.77 is: 397,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,622.01 : 620,056.60 = 288,527.77 : x
  2. Step 2: Convert to fraction form
    449,622.01/620,056.60 = 288,527.77/x
  3. Step 3: Cross multiply
    449,622.01x = 620,056.60 × 288,527.77
  4. Step 4: Simplify right side
    449,622.01x = 178,903,548,071.78
  5. Step 5: Solve for x
    x = 178,903,548,071.78/449,622.01
  6. Step 6: Final answer
    x = 397,897.67

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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.