Finding the Fourth Proportional to 1,355,208.12, 1,870,153.48 and 774,394.39
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Solution
The fourth proportional to 1,355,208.12, 1,870,153.48 and 774,394.39 is: 1,068,644.99
Step by Step Solution
- Step 1: Write the proportion equation
1,355,208.12 : 1,870,153.48 = 774,394.39 : x - Step 2: Convert to fraction form
1,355,208.12/1,870,153.48 = 774,394.39/x - Step 3: Cross multiply
1,355,208.12x = 1,870,153.48 × 774,394.39 - Step 4: Simplify right side
1,355,208.12x = 1,448,236,366,656.66 - Step 5: Solve for x
x = 1,448,236,366,656.66/1,355,208.12 - Step 6: Final answer
x = 1,068,644.99
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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.