Finding the Fourth Proportional to 1,420,891.77, 1,960,807.71 and 776,298.09
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Solution
The fourth proportional to 1,420,891.77, 1,960,807.71 and 776,298.09 is: 1,071,278.84
Step by Step Solution
- Step 1: Write the proportion equation
1,420,891.77 : 1,960,807.71 = 776,298.09 : x - Step 2: Convert to fraction form
1,420,891.77/1,960,807.71 = 776,298.09/x - Step 3: Cross multiply
1,420,891.77x = 1,960,807.71 × 776,298.09 - Step 4: Simplify right side
1,420,891.77x = 1,522,171,280,130.27 - Step 5: Solve for x
x = 1,522,171,280,130.27/1,420,891.77 - Step 6: Final answer
x = 1,071,278.84
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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.