Finding the Fourth Proportional to 821,248.12, 1,133,310.18 and 458,678.08
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Solution
The fourth proportional to 821,248.12, 1,133,310.18 and 458,678.08 is: 632,968.92
Step by Step Solution
- Step 1: Write the proportion equation
821,248.12 : 1,133,310.18 = 458,678.08 : x - Step 2: Convert to fraction form
821,248.12/1,133,310.18 = 458,678.08/x - Step 3: Cross multiply
821,248.12x = 1,133,310.18 × 458,678.08 - Step 4: Simplify right side
821,248.12x = 519,824,537,406.85 - Step 5: Solve for x
x = 519,824,537,406.85/821,248.12 - Step 6: Final answer
x = 632,968.92
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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.