Finding the Fourth Proportional to 897,415.20, 1,346,122.80 and 861,985.80
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Solution
The fourth proportional to 897,415.20, 1,346,122.80 and 861,985.80 is: 1,292,978.70
Step by Step Solution
- Step 1: Write the proportion equation
897,415.20 : 1,346,122.80 = 861,985.80 : x - Step 2: Convert to fraction form
897,415.20/1,346,122.80 = 861,985.80/x - Step 3: Cross multiply
897,415.20x = 1,346,122.80 × 861,985.80 - Step 4: Simplify right side
897,415.20x = 1,160,338,738,656.24 - Step 5: Solve for x
x = 1,160,338,738,656.24/897,415.20 - Step 6: Final answer
x = 1,292,978.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.