Finding the Fourth Proportional to 1,378,118.76, 1,902,323.52 and 805,345.08
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Solution
The fourth proportional to 1,378,118.76, 1,902,323.52 and 805,345.08 is: 1,111,679.87
Step by Step Solution
- Step 1: Write the proportion equation
1,378,118.76 : 1,902,323.52 = 805,345.08 : x - Step 2: Convert to fraction form
1,378,118.76/1,902,323.52 = 805,345.08/x - Step 3: Cross multiply
1,378,118.76x = 1,902,323.52 × 805,345.08 - Step 4: Simplify right side
1,378,118.76x = 1,532,026,887,400.28 - Step 5: Solve for x
x = 1,532,026,887,400.28/1,378,118.76 - Step 6: Final answer
x = 1,111,679.87
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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.