Finding the Fourth Proportional to 1,431,424.11, 1,975,378.50 and 778,051.67
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Solution
The fourth proportional to 1,431,424.11, 1,975,378.50 and 778,051.67 is: 1,073,718.49
Step by Step Solution
- Step 1: Write the proportion equation
1,431,424.11 : 1,975,378.50 = 778,051.67 : x - Step 2: Convert to fraction form
1,431,424.11/1,975,378.50 = 778,051.67/x - Step 3: Cross multiply
1,431,424.11x = 1,975,378.50 × 778,051.67 - Step 4: Simplify right side
1,431,424.11x = 1,536,946,528,741.93 - Step 5: Solve for x
x = 1,536,946,528,741.93/1,431,424.11 - Step 6: Final answer
x = 1,073,718.49
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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.