Finding the Fourth Proportional to 1,207,360,371.84, 1,811,423,368.32 and 430,989,367.68
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Solution
The fourth proportional to 1,207,360,371.84, 1,811,423,368.32 and 430,989,367.68 is: 646,620,702.75
Step by Step Solution
- Step 1: Write the proportion equation
1,207,360,371.84 : 1,811,423,368.32 = 430,989,367.68 : x - Step 2: Convert to fraction form
1,207,360,371.84/1,811,423,368.32 = 430,989,367.68/x - Step 3: Cross multiply
1,207,360,371.84x = 1,811,423,368.32 × 430,989,367.68 - Step 4: Simplify right side
1,207,360,371.84x = 780,704,212,113,012,480 - Step 5: Solve for x
x = 780,704,212,113,012,480/1,207,360,371.84 - Step 6: Final answer
x = 646,620,702.75
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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.