Finding the Fourth Proportional to 621,528,393.42, 857,709,268.29 and 343,069,975.98
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Solution
The fourth proportional to 621,528,393.42, 857,709,268.29 and 343,069,975.98 is: 473,436,613.97
Step by Step Solution
- Step 1: Write the proportion equation
621,528,393.42 : 857,709,268.29 = 343,069,975.98 : x - Step 2: Convert to fraction form
621,528,393.42/857,709,268.29 = 343,069,975.98/x - Step 3: Cross multiply
621,528,393.42x = 857,709,268.29 × 343,069,975.98 - Step 4: Simplify right side
621,528,393.42x = 294,254,298,070,073,664 - Step 5: Solve for x
x = 294,254,298,070,073,664/621,528,393.42 - Step 6: Final answer
x = 473,436,613.97
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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.