Finding the Fourth Proportional to 778,972.05, 1,168,458.08 and 742,230.45
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Solution
The fourth proportional to 778,972.05, 1,168,458.08 and 742,230.45 is: 1,113,345.68
Step by Step Solution
- Step 1: Write the proportion equation
778,972.05 : 1,168,458.08 = 742,230.45 : x - Step 2: Convert to fraction form
778,972.05/1,168,458.08 = 742,230.45/x - Step 3: Cross multiply
778,972.05x = 1,168,458.08 × 742,230.45 - Step 4: Simplify right side
778,972.05x = 867,265,162,813.38 - Step 5: Solve for x
x = 867,265,162,813.38/778,972.05 - Step 6: Final answer
x = 1,113,345.68
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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.