Finding the Fourth Proportional to 857,557.84, 1,287,107.74 and 458,539.68
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Solution
The fourth proportional to 857,557.84, 1,287,107.74 and 458,539.68 is: 688,221.77
Step by Step Solution
- Step 1: Write the proportion equation
857,557.84 : 1,287,107.74 = 458,539.68 : x - Step 2: Convert to fraction form
857,557.84/1,287,107.74 = 458,539.68/x - Step 3: Cross multiply
857,557.84x = 1,287,107.74 × 458,539.68 - Step 4: Simplify right side
857,557.84x = 590,189,971,225.12 - Step 5: Solve for x
x = 590,189,971,225.12/857,557.84 - Step 6: Final answer
x = 688,221.77
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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.