Finding the Fourth Proportional to 995,368,987.20, 1,493,053,480.80 and 305,382,734.40
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Solution
The fourth proportional to 995,368,987.20, 1,493,053,480.80 and 305,382,734.40 is: 458,074,101.60
Step by Step Solution
- Step 1: Write the proportion equation
995,368,987.20 : 1,493,053,480.80 = 305,382,734.40 : x - Step 2: Convert to fraction form
995,368,987.20/1,493,053,480.80 = 305,382,734.40/x - Step 3: Cross multiply
995,368,987.20x = 1,493,053,480.80 × 305,382,734.40 - Step 4: Simplify right side
995,368,987.20x = 455,952,754,572,141,824 - Step 5: Solve for x
x = 455,952,754,572,141,824/995,368,987.20 - Step 6: Final answer
x = 458,074,101.60
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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.