Finding the Fourth Proportional to 763,690.14, 1,056,175.90 and 668,030.70
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Solution
The fourth proportional to 763,690.14, 1,056,175.90 and 668,030.70 is: 923,879.84
Step by Step Solution
- Step 1: Write the proportion equation
763,690.14 : 1,056,175.90 = 668,030.70 : x - Step 2: Convert to fraction form
763,690.14/1,056,175.90 = 668,030.70/x - Step 3: Cross multiply
763,690.14x = 1,056,175.90 × 668,030.70 - Step 4: Simplify right side
763,690.14x = 705,557,925,800.13 - Step 5: Solve for x
x = 705,557,925,800.13/763,690.14 - Step 6: Final answer
x = 923,879.84
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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.