Finding the Fourth Proportional to 728,498.95, 1,092,125.13 and 279,541.99
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Solution
The fourth proportional to 728,498.95, 1,092,125.13 and 279,541.99 is: 419,073.81
Step by Step Solution
- Step 1: Write the proportion equation
728,498.95 : 1,092,125.13 = 279,541.99 : x - Step 2: Convert to fraction form
728,498.95/1,092,125.13 = 279,541.99/x - Step 3: Cross multiply
728,498.95x = 1,092,125.13 × 279,541.99 - Step 4: Simplify right side
728,498.95x = 305,294,832,169.21 - Step 5: Solve for x
x = 305,294,832,169.21/728,498.95 - Step 6: Final answer
x = 419,073.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.