Finding the Fourth Proportional to 1,152,639.08, 1,590,577.18 and 643,374.24
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Solution
The fourth proportional to 1,152,639.08, 1,590,577.18 and 643,374.24 is: 887,820.31
Step by Step Solution
- Step 1: Write the proportion equation
1,152,639.08 : 1,590,577.18 = 643,374.24 : x - Step 2: Convert to fraction form
1,152,639.08/1,590,577.18 = 643,374.24/x - Step 3: Cross multiply
1,152,639.08x = 1,590,577.18 × 643,374.24 - Step 4: Simplify right side
1,152,639.08x = 1,023,336,384,343.84 - Step 5: Solve for x
x = 1,023,336,384,343.84/1,152,639.08 - Step 6: Final answer
x = 887,820.31
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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.