Finding the Fourth Proportional to 917,128.05, 1,265,639.18 and 509,230.68
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Solution
The fourth proportional to 917,128.05, 1,265,639.18 and 509,230.68 is: 702,739.71
Step by Step Solution
- Step 1: Write the proportion equation
917,128.05 : 1,265,639.18 = 509,230.68 : x - Step 2: Convert to fraction form
917,128.05/1,265,639.18 = 509,230.68/x - Step 3: Cross multiply
917,128.05x = 1,265,639.18 × 509,230.68 - Step 4: Simplify right side
917,128.05x = 644,502,297,719.89 - Step 5: Solve for x
x = 644,502,297,719.89/917,128.05 - Step 6: Final answer
x = 702,739.71
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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.