Finding the Fourth Proportional to 869,943,121.20, 1,304,914,681.80 and 295,514,449.20
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Solution
The fourth proportional to 869,943,121.20, 1,304,914,681.80 and 295,514,449.20 is: 443,271,673.80
Step by Step Solution
- Step 1: Write the proportion equation
869,943,121.20 : 1,304,914,681.80 = 295,514,449.20 : x - Step 2: Convert to fraction form
869,943,121.20/1,304,914,681.80 = 295,514,449.20/x - Step 3: Cross multiply
869,943,121.20x = 1,304,914,681.80 × 295,514,449.20 - Step 4: Simplify right side
869,943,121.20x = 385,621,143,445,120,256 - Step 5: Solve for x
x = 385,621,143,445,120,256/869,943,121.20 - Step 6: Final answer
x = 443,271,673.80
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Double scale
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Similar ratio
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1.5x scale
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.