Finding the Fourth Proportional to 1,426,972.21, 1,969,283.15 and 853,902.07
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Solution
The fourth proportional to 1,426,972.21, 1,969,283.15 and 853,902.07 is: 1,178,421.66
Step by Step Solution
- Step 1: Write the proportion equation
1,426,972.21 : 1,969,283.15 = 853,902.07 : x - Step 2: Convert to fraction form
1,426,972.21/1,969,283.15 = 853,902.07/x - Step 3: Cross multiply
1,426,972.21x = 1,969,283.15 × 853,902.07 - Step 4: Simplify right side
1,426,972.21x = 1,681,574,958,201.12 - Step 5: Solve for x
x = 1,681,574,958,201.12/1,426,972.21 - Step 6: Final answer
x = 1,178,421.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.