Finding the Fourth Proportional to 691,638.68, 954,538.62 and 405,400.88
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Solution
The fourth proportional to 691,638.68, 954,538.62 and 405,400.88 is: 559,498.49
Step by Step Solution
- Step 1: Write the proportion equation
691,638.68 : 954,538.62 = 405,400.88 : x - Step 2: Convert to fraction form
691,638.68/954,538.62 = 405,400.88/x - Step 3: Cross multiply
691,638.68x = 954,538.62 × 405,400.88 - Step 4: Simplify right side
691,638.68x = 386,970,796,541.99 - Step 5: Solve for x
x = 386,970,796,541.99/691,638.68 - Step 6: Final answer
x = 559,498.49
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.