Finding the Fourth Proportional to 718,522,830.48, 991,555,730.74 and 417,136,107.54
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Solution
The fourth proportional to 718,522,830.48, 991,555,730.74 and 417,136,107.54 is: 575,644,475.56
Step by Step Solution
- Step 1: Write the proportion equation
718,522,830.48 : 991,555,730.74 = 417,136,107.54 : x - Step 2: Convert to fraction form
718,522,830.48/991,555,730.74 = 417,136,107.54/x - Step 3: Cross multiply
718,522,830.48x = 991,555,730.74 × 417,136,107.54 - Step 4: Simplify right side
718,522,830.48x = 413,613,697,929,863,936 - Step 5: Solve for x
x = 413,613,697,929,863,936/718,522,830.48 - Step 6: Final answer
x = 575,644,475.56
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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.