Finding the Fourth Proportional to 1,539,221.76, 2,124,128.88 and 860,158.26
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Solution
The fourth proportional to 1,539,221.76, 2,124,128.88 and 860,158.26 is: 1,187,019.99
Step by Step Solution
- Step 1: Write the proportion equation
1,539,221.76 : 2,124,128.88 = 860,158.26 : x - Step 2: Convert to fraction form
1,539,221.76/2,124,128.88 = 860,158.26/x - Step 3: Cross multiply
1,539,221.76x = 2,124,128.88 × 860,158.26 - Step 4: Simplify right side
1,539,221.76x = 1,827,087,001,436.55 - Step 5: Solve for x
x = 1,827,087,001,436.55/1,539,221.76 - Step 6: Final answer
x = 1,187,019.99
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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.