Finding the Fourth Proportional to 919,701.19, 1,388,189.95 and 919,701.19
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Solution
The fourth proportional to 919,701.19, 1,388,189.95 and 919,701.19 is: 1,388,189.95
Step by Step Solution
- Step 1: Write the proportion equation
919,701.19 : 1,388,189.95 = 919,701.19 : x - Step 2: Convert to fraction form
919,701.19/1,388,189.95 = 919,701.19/x - Step 3: Cross multiply
919,701.19x = 1,388,189.95 × 919,701.19 - Step 4: Simplify right side
919,701.19x = 1,276,719,948,961.04 - Step 5: Solve for x
x = 1,276,719,948,961.04/919,701.19 - Step 6: Final answer
x = 1,388,189.95
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.