Finding the Fourth Proportional to 2,109,617.36, 2,911,285.94 and 1,142,747.64
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Solution
The fourth proportional to 2,109,617.36, 2,911,285.94 and 1,142,747.64 is: 1,576,999.32
Step by Step Solution
- Step 1: Write the proportion equation
2,109,617.36 : 2,911,285.94 = 1,142,747.64 : x - Step 2: Convert to fraction form
2,109,617.36/2,911,285.94 = 1,142,747.64/x - Step 3: Cross multiply
2,109,617.36x = 2,911,285.94 × 1,142,747.64 - Step 4: Simplify right side
2,109,617.36x = 3,326,865,137,300.18 - Step 5: Solve for x
x = 3,326,865,137,300.18/2,109,617.36 - Step 6: Final answer
x = 1,576,999.32
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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.