Finding the Fourth Proportional to 869,435.80, 1,214,721.80 and 869,435.80
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Solution
The fourth proportional to 869,435.80, 1,214,721.80 and 869,435.80 is: 1,214,721.80
Step by Step Solution
- Step 1: Write the proportion equation
869,435.80 : 1,214,721.80 = 869,435.80 : x - Step 2: Convert to fraction form
869,435.80/1,214,721.80 = 869,435.80/x - Step 3: Cross multiply
869,435.80x = 1,214,721.80 × 869,435.80 - Step 4: Simplify right side
869,435.80x = 1,056,122,619,960.44 - Step 5: Solve for x
x = 1,056,122,619,960.44/869,435.80 - Step 6: Final answer
x = 1,214,721.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.