Finding the Fourth Proportional to 1,276,840.40, 1,911,574.20 and 779,176.40
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Solution
The fourth proportional to 1,276,840.40, 1,911,574.20 and 779,176.40 is: 1,166,515.02
Step by Step Solution
- Step 1: Write the proportion equation
1,276,840.40 : 1,911,574.20 = 779,176.40 : x - Step 2: Convert to fraction form
1,276,840.40/1,911,574.20 = 779,176.40/x - Step 3: Cross multiply
1,276,840.40x = 1,911,574.20 × 779,176.40 - Step 4: Simplify right side
1,276,840.40x = 1,489,453,503,488.88 - Step 5: Solve for x
x = 1,489,453,503,488.88/1,276,840.40 - Step 6: Final answer
x = 1,166,515.02
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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.