Finding the Fourth Proportional to 1,310,419,287.08, 1,808,417,778.17 and 715,731,825.84
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Solution
The fourth proportional to 1,310,419,287.08, 1,808,417,778.17 and 715,731,825.84 is: 987,731,309.37
Step by Step Solution
- Step 1: Write the proportion equation
1,310,419,287.08 : 1,808,417,778.17 = 715,731,825.84 : x - Step 2: Convert to fraction form
1,310,419,287.08/1,808,417,778.17 = 715,731,825.84/x - Step 3: Cross multiply
1,310,419,287.08x = 1,808,417,778.17 × 715,731,825.84 - Step 4: Simplify right side
1,310,419,287.08x = 1,294,342,158,251,130,368 - Step 5: Solve for x
x = 1,294,342,158,251,130,368/1,310,419,287.08 - Step 6: Final answer
x = 987,731,309.37
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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.