Finding the Fourth Proportional to 1,403,393,236,238.70, 1,936,694,037,246.90 and 777,684,455,742.05
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Solution
The fourth proportional to 1,403,393,236,238.70, 1,936,694,037,246.90 and 777,684,455,742.05 is: 1,073,210,850,247.43
Step by Step Solution
- Step 1: Write the proportion equation
1,403,393,236,238.70 : 1,936,694,037,246.90 = 777,684,455,742.05 : x - Step 2: Convert to fraction form
1,403,393,236,238.70/1,936,694,037,246.90 = 777,684,455,742.05/x - Step 3: Cross multiply
1,403,393,236,238.70x = 1,936,694,037,246.90 × 777,684,455,742.05 - Step 4: Simplify right side
1,403,393,236,238.70x = 1,506,136,848,295,228,939,960,320 - Step 5: Solve for x
x = 1,506,136,848,295,228,939,960,320/1,403,393,236,238.70 - Step 6: Final answer
x = 1,073,210,850,247.43
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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.