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Finding the Fourth Proportional to 863,804.40, 1,295,706.60 and 443,900.40

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Solution

The fourth proportional to 863,804.40, 1,295,706.60 and 443,900.40 is: 665,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,804.40 : 1,295,706.60 = 443,900.40 : x
  2. Step 2: Convert to fraction form
    863,804.40/1,295,706.60 = 443,900.40/x
  3. Step 3: Cross multiply
    863,804.40x = 1,295,706.60 × 443,900.40
  4. Step 4: Simplify right side
    863,804.40x = 575,164,678,022.64
  5. Step 5: Solve for x
    x = 575,164,678,022.64/863,804.40
  6. Step 6: Final answer
    x = 665,850.60

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Double scale
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Similar ratio
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1.5x scale

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.