Finding the Fourth Proportional to 602,431,326.40, 903,646,989.60 and 418,765,316.80
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Solution
The fourth proportional to 602,431,326.40, 903,646,989.60 and 418,765,316.80 is: 628,147,975.20
Step by Step Solution
- Step 1: Write the proportion equation
602,431,326.40 : 903,646,989.60 = 418,765,316.80 : x - Step 2: Convert to fraction form
602,431,326.40/903,646,989.60 = 418,765,316.80/x - Step 3: Cross multiply
602,431,326.40x = 903,646,989.60 × 418,765,316.80 - Step 4: Simplify right side
602,431,326.40x = 378,416,017,875,210,304 - Step 5: Solve for x
x = 378,416,017,875,210,304/602,431,326.40 - Step 6: Final answer
x = 628,147,975.20
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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.