Finding the Fourth Proportional to 1,382,673,978.99, 1,908,264,393.41 and 906,764,577.75
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Solution
The fourth proportional to 1,382,673,978.99, 1,908,264,393.41 and 906,764,577.75 is: 1,251,449,425.69
Step by Step Solution
- Step 1: Write the proportion equation
1,382,673,978.99 : 1,908,264,393.41 = 906,764,577.75 : x - Step 2: Convert to fraction form
1,382,673,978.99/1,908,264,393.41 = 906,764,577.75/x - Step 3: Cross multiply
1,382,673,978.99x = 1,908,264,393.41 × 906,764,577.75 - Step 4: Simplify right side
1,382,673,978.99x = 1,730,346,556,921,244,672 - Step 5: Solve for x
x = 1,730,346,556,921,244,672/1,382,673,978.99 - Step 6: Final answer
x = 1,251,449,425.69
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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.