Finding the Fourth Proportional to 1,278,259.47, 1,918,059.87 and 480,091.95
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Solution
The fourth proportional to 1,278,259.47, 1,918,059.87 and 480,091.95 is: 720,389.82
Step by Step Solution
- Step 1: Write the proportion equation
1,278,259.47 : 1,918,059.87 = 480,091.95 : x - Step 2: Convert to fraction form
1,278,259.47/1,918,059.87 = 480,091.95/x - Step 3: Cross multiply
1,278,259.47x = 1,918,059.87 × 480,091.95 - Step 4: Simplify right side
1,278,259.47x = 920,845,103,205.05 - Step 5: Solve for x
x = 920,845,103,205.05/1,278,259.47 - Step 6: Final answer
x = 720,389.82
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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.