Finding the Fourth Proportional to 1,280,122.16, 1,766,634.36 and 707,157.68
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Solution
The fourth proportional to 1,280,122.16, 1,766,634.36 and 707,157.68 is: 975,913.94
Step by Step Solution
- Step 1: Write the proportion equation
1,280,122.16 : 1,766,634.36 = 707,157.68 : x - Step 2: Convert to fraction form
1,280,122.16/1,766,634.36 = 707,157.68/x - Step 3: Cross multiply
1,280,122.16x = 1,766,634.36 × 707,157.68 - Step 4: Simplify right side
1,280,122.16x = 1,249,289,055,425.89 - Step 5: Solve for x
x = 1,249,289,055,425.89/1,280,122.16 - Step 6: Final answer
x = 975,913.94
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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.