Finding the Fourth Proportional to 728,639.42, 1,090,684.70 and 536,730.20
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Solution
The fourth proportional to 728,639.42, 1,090,684.70 and 536,730.20 is: 803,419.90
Step by Step Solution
- Step 1: Write the proportion equation
728,639.42 : 1,090,684.70 = 536,730.20 : x - Step 2: Convert to fraction form
728,639.42/1,090,684.70 = 536,730.20/x - Step 3: Cross multiply
728,639.42x = 1,090,684.70 × 536,730.20 - Step 4: Simplify right side
728,639.42x = 585,403,413,056.34 - Step 5: Solve for x
x = 585,403,413,056.34/728,639.42 - Step 6: Final answer
x = 803,419.90
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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.