Finding the Fourth Proportional to 821,393.19, 1,232,089.10 and 309,154.05
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Solution
The fourth proportional to 821,393.19, 1,232,089.10 and 309,154.05 is: 463,730.82
Step by Step Solution
- Step 1: Write the proportion equation
821,393.19 : 1,232,089.10 = 309,154.05 : x - Step 2: Convert to fraction form
821,393.19/1,232,089.10 = 309,154.05/x - Step 3: Cross multiply
821,393.19x = 1,232,089.10 × 309,154.05 - Step 4: Simplify right side
821,393.19x = 380,905,333,680.09 - Step 5: Solve for x
x = 380,905,333,680.09/821,393.19 - Step 6: Final answer
x = 463,730.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.