Finding the Fourth Proportional to 7,243,801.20, 10,865,701.80 and 2,194,455.60
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Solution
The fourth proportional to 7,243,801.20, 10,865,701.80 and 2,194,455.60 is: 3,291,683.40
Step by Step Solution
- Step 1: Write the proportion equation
7,243,801.20 : 10,865,701.80 = 2,194,455.60 : x - Step 2: Convert to fraction form
7,243,801.20/10,865,701.80 = 2,194,455.60/x - Step 3: Cross multiply
7,243,801.20x = 10,865,701.80 × 2,194,455.60 - Step 4: Simplify right side
7,243,801.20x = 23,844,300,162,940.08 - Step 5: Solve for x
x = 23,844,300,162,940.08/7,243,801.20 - Step 6: Final answer
x = 3,291,683.40
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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.