Finding the Fourth Proportional to 1,216,037,387.87, 1,678,134,068.06 and 659,120,812.19
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Solution
The fourth proportional to 1,216,037,387.87, 1,678,134,068.06 and 659,120,812.19 is: 909,588,061.14
Step by Step Solution
- Step 1: Write the proportion equation
1,216,037,387.87 : 1,678,134,068.06 = 659,120,812.19 : x - Step 2: Convert to fraction form
1,216,037,387.87/1,678,134,068.06 = 659,120,812.19/x - Step 3: Cross multiply
1,216,037,387.87x = 1,678,134,068.06 × 659,120,812.19 - Step 4: Simplify right side
1,216,037,387.87x = 1,106,093,089,903,415,936 - Step 5: Solve for x
x = 1,106,093,089,903,415,936/1,216,037,387.87 - Step 6: Final answer
x = 909,588,061.14
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Double scale
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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.