Home / 724,661.64-1,085,942.70-408,445.74

Finding the Fourth Proportional to 724,661.64, 1,085,942.70 and 408,445.74

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Solution

The fourth proportional to 724,661.64, 1,085,942.70 and 408,445.74 is: 612,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,661.64 : 1,085,942.70 = 408,445.74 : x
  2. Step 2: Convert to fraction form
    724,661.64/1,085,942.70 = 408,445.74/x
  3. Step 3: Cross multiply
    724,661.64x = 1,085,942.70 × 408,445.74
  4. Step 4: Simplify right side
    724,661.64x = 443,548,669,699.10
  5. Step 5: Solve for x
    x = 443,548,669,699.10/724,661.64
  6. Step 6: Final answer
    x = 612,076.93

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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.