Finding the Fourth Proportional to 1,403,910,369.99, 1,939,414,339.71 and 1,121,281,742.07
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Solution
The fourth proportional to 1,403,910,369.99, 1,939,414,339.71 and 1,121,281,742.07 is: 1,548,980,573.06
Step by Step Solution
- Step 1: Write the proportion equation
1,403,910,369.99 : 1,939,414,339.71 = 1,121,281,742.07 : x - Step 2: Convert to fraction form
1,403,910,369.99/1,939,414,339.71 = 1,121,281,742.07/x - Step 3: Cross multiply
1,403,910,369.99x = 1,939,414,339.71 × 1,121,281,742.07 - Step 4: Simplify right side
1,403,910,369.99x = 2,174,629,889,425,567,488 - Step 5: Solve for x
x = 2,174,629,889,425,567,488/1,403,910,369.99 - Step 6: Final answer
x = 1,548,980,573.06
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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.