Finding the Fourth Proportional to 821,787.14, 1,134,178.80 and 472,920.32
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Solution
The fourth proportional to 821,787.14, 1,134,178.80 and 472,920.32 is: 652,694.81
Step by Step Solution
- Step 1: Write the proportion equation
821,787.14 : 1,134,178.80 = 472,920.32 : x - Step 2: Convert to fraction form
821,787.14/1,134,178.80 = 472,920.32/x - Step 3: Cross multiply
821,787.14x = 1,134,178.80 × 472,920.32 - Step 4: Simplify right side
821,787.14x = 536,376,201,033.22 - Step 5: Solve for x
x = 536,376,201,033.22/821,787.14 - Step 6: Final answer
x = 652,694.81
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1.5x scale
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.