Finding the Fourth Proportional to 1,378,345.79, 1,901,838.47 and 805,275.24
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Solution
The fourth proportional to 1,378,345.79, 1,901,838.47 and 805,275.24 is: 1,111,116.99
Step by Step Solution
- Step 1: Write the proportion equation
1,378,345.79 : 1,901,838.47 = 805,275.24 : x - Step 2: Convert to fraction form
1,378,345.79/1,901,838.47 = 805,275.24/x - Step 3: Cross multiply
1,378,345.79x = 1,901,838.47 × 805,275.24 - Step 4: Simplify right side
1,378,345.79x = 1,531,503,426,344.11 - Step 5: Solve for x
x = 1,531,503,426,344.11/1,378,345.79 - Step 6: Final answer
x = 1,111,116.99
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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.