Finding the Fourth Proportional to 1,312,761.60, 1,810,408.32 and 860,302.08
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Solution
The fourth proportional to 1,312,761.60, 1,810,408.32 and 860,302.08 is: 1,186,428.70
Step by Step Solution
- Step 1: Write the proportion equation
1,312,761.60 : 1,810,408.32 = 860,302.08 : x - Step 2: Convert to fraction form
1,312,761.60/1,810,408.32 = 860,302.08/x - Step 3: Cross multiply
1,312,761.60x = 1,810,408.32 × 860,302.08 - Step 4: Simplify right side
1,312,761.60x = 1,557,498,043,345.31 - Step 5: Solve for x
x = 1,557,498,043,345.31/1,312,761.60 - Step 6: Final answer
x = 1,186,428.70
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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.