Finding the Fourth Proportional to 690,039,431.68, 1,035,382,371.84 and 340,094,731.84
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Solution
The fourth proportional to 690,039,431.68, 1,035,382,371.84 and 340,094,731.84 is: 510,301,402.99
Step by Step Solution
- Step 1: Write the proportion equation
690,039,431.68 : 1,035,382,371.84 = 340,094,731.84 : x - Step 2: Convert to fraction form
690,039,431.68/1,035,382,371.84 = 340,094,731.84/x - Step 3: Cross multiply
690,039,431.68x = 1,035,382,371.84 × 340,094,731.84 - Step 4: Simplify right side
690,039,431.68x = 352,128,090,102,787,968 - Step 5: Solve for x
x = 352,128,090,102,787,968/690,039,431.68 - Step 6: Final answer
x = 510,301,402.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.