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Finding the Fourth Proportional to 771,806.68, 1,065,096.48 and 449,737.72

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Solution

The fourth proportional to 771,806.68, 1,065,096.48 and 449,737.72 is: 620,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,806.68 : 1,065,096.48 = 449,737.72 : x
  2. Step 2: Convert to fraction form
    771,806.68/1,065,096.48 = 449,737.72/x
  3. Step 3: Cross multiply
    771,806.68x = 1,065,096.48 × 449,737.72
  4. Step 4: Simplify right side
    771,806.68x = 479,014,062,495.23
  5. Step 5: Solve for x
    x = 479,014,062,495.23/771,806.68
  6. Step 6: Final answer
    x = 620,639.95

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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.