Finding the Fourth Proportional to 1,311,614,238.12, 1,810,023,252.36 and 716,898,378.24
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Solution
The fourth proportional to 1,311,614,238.12, 1,810,023,252.36 and 716,898,378.24 is: 989,317,359.08
Step by Step Solution
- Step 1: Write the proportion equation
1,311,614,238.12 : 1,810,023,252.36 = 716,898,378.24 : x - Step 2: Convert to fraction form
1,311,614,238.12/1,810,023,252.36 = 716,898,378.24/x - Step 3: Cross multiply
1,311,614,238.12x = 1,810,023,252.36 × 716,898,378.24 - Step 4: Simplify right side
1,311,614,238.12x = 1,297,602,734,193,574,144 - Step 5: Solve for x
x = 1,297,602,734,193,574,144/1,311,614,238.12 - Step 6: Final answer
x = 989,317,359.08
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1.5x scale
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.