Finding the Fourth Proportional to 1,442,407.80, 2,163,611.70 and 778,855.80
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Solution
The fourth proportional to 1,442,407.80, 2,163,611.70 and 778,855.80 is: 1,168,283.70
Step by Step Solution
- Step 1: Write the proportion equation
1,442,407.80 : 2,163,611.70 = 778,855.80 : x - Step 2: Convert to fraction form
1,442,407.80/2,163,611.70 = 778,855.80/x - Step 3: Cross multiply
1,442,407.80x = 2,163,611.70 × 778,855.80 - Step 4: Simplify right side
1,442,407.80x = 1,685,141,521,492.86 - Step 5: Solve for x
x = 1,685,141,521,492.86/1,442,407.80 - Step 6: Final answer
x = 1,168,283.70
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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.