Finding the Fourth Proportional to 1,220,987.25, 1,684,962.41 and 677,206.31
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Solution
The fourth proportional to 1,220,987.25, 1,684,962.41 and 677,206.31 is: 934,544.70
Step by Step Solution
- Step 1: Write the proportion equation
1,220,987.25 : 1,684,962.41 = 677,206.31 : x - Step 2: Convert to fraction form
1,220,987.25/1,684,962.41 = 677,206.31/x - Step 3: Cross multiply
1,220,987.25x = 1,684,962.41 × 677,206.31 - Step 4: Simplify right side
1,220,987.25x = 1,141,067,164,353.96 - Step 5: Solve for x
x = 1,141,067,164,353.96/1,220,987.25 - Step 6: Final answer
x = 934,544.70
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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.