Finding the Fourth Proportional to 1,278,675.19, 1,918,328.52 and 380,113.12
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Solution
The fourth proportional to 1,278,675.19, 1,918,328.52 and 380,113.12 is: 570,263.54
Step by Step Solution
- Step 1: Write the proportion equation
1,278,675.19 : 1,918,328.52 = 380,113.12 : x - Step 2: Convert to fraction form
1,278,675.19/1,918,328.52 = 380,113.12/x - Step 3: Cross multiply
1,278,675.19x = 1,918,328.52 × 380,113.12 - Step 4: Simplify right side
1,278,675.19x = 729,181,838,922.18 - Step 5: Solve for x
x = 729,181,838,922.18/1,278,675.19 - Step 6: Final answer
x = 570,263.54
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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.