Finding the Fourth Proportional to 912,138.08, 1,258,752.24 and 509,730.08
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Solution
The fourth proportional to 912,138.08, 1,258,752.24 and 509,730.08 is: 703,428.45
Step by Step Solution
- Step 1: Write the proportion equation
912,138.08 : 1,258,752.24 = 509,730.08 : x - Step 2: Convert to fraction form
912,138.08/1,258,752.24 = 509,730.08/x - Step 3: Cross multiply
912,138.08x = 1,258,752.24 × 509,730.08 - Step 4: Simplify right side
912,138.08x = 641,623,879,995.38 - Step 5: Solve for x
x = 641,623,879,995.38/912,138.08 - Step 6: Final answer
x = 703,428.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.