Finding the Fourth Proportional to 1,238,868.08, 1,710,370.80 and 780,375.68
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Solution
The fourth proportional to 1,238,868.08, 1,710,370.80 and 780,375.68 is: 1,077,380.07
Step by Step Solution
- Step 1: Write the proportion equation
1,238,868.08 : 1,710,370.80 = 780,375.68 : x - Step 2: Convert to fraction form
1,238,868.08/1,710,370.80 = 780,375.68/x - Step 3: Cross multiply
1,238,868.08x = 1,710,370.80 × 780,375.68 - Step 4: Simplify right side
1,238,868.08x = 1,334,731,776,102.14 - Step 5: Solve for x
x = 1,334,731,776,102.14/1,238,868.08 - Step 6: Final answer
x = 1,077,380.07
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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.