Finding the Fourth Proportional to 4,139,817.20, 6,209,725.80 and 3,132,047.60
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Solution
The fourth proportional to 4,139,817.20, 6,209,725.80 and 3,132,047.60 is: 4,698,071.40
Step by Step Solution
- Step 1: Write the proportion equation
4,139,817.20 : 6,209,725.80 = 3,132,047.60 : x - Step 2: Convert to fraction form
4,139,817.20/6,209,725.80 = 3,132,047.60/x - Step 3: Cross multiply
4,139,817.20x = 6,209,725.80 × 3,132,047.60 - Step 4: Simplify right side
4,139,817.20x = 19,449,156,788,548.08 - Step 5: Solve for x
x = 19,449,156,788,548.08/4,139,817.20 - Step 6: Final answer
x = 4,698,071.40
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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.