Finding the Fourth Proportional to 1,771,290,979.20, 2,656,936,468.80 and 478,826,467.20
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Solution
The fourth proportional to 1,771,290,979.20, 2,656,936,468.80 and 478,826,467.20 is: 718,239,700.80
Step by Step Solution
- Step 1: Write the proportion equation
1,771,290,979.20 : 2,656,936,468.80 = 478,826,467.20 : x - Step 2: Convert to fraction form
1,771,290,979.20/2,656,936,468.80 = 478,826,467.20/x - Step 3: Cross multiply
1,771,290,979.20x = 2,656,936,468.80 × 478,826,467.20 - Step 4: Simplify right side
1,771,290,979.20x = 1,272,211,502,930,347,008 - Step 5: Solve for x
x = 1,272,211,502,930,347,008/1,771,290,979.20 - Step 6: Final answer
x = 718,239,700.80
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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.