Finding the Fourth Proportional to 893,470,915.20, 1,340,206,372.80 and 663,888,403.20
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Solution
The fourth proportional to 893,470,915.20, 1,340,206,372.80 and 663,888,403.20 is: 995,832,604.80
Step by Step Solution
- Step 1: Write the proportion equation
893,470,915.20 : 1,340,206,372.80 = 663,888,403.20 : x - Step 2: Convert to fraction form
893,470,915.20/1,340,206,372.80 = 663,888,403.20/x - Step 3: Cross multiply
893,470,915.20x = 1,340,206,372.80 × 663,888,403.20 - Step 4: Simplify right side
893,470,915.20x = 889,747,468,796,656,000 - Step 5: Solve for x
x = 889,747,468,796,656,000/893,470,915.20 - Step 6: Final answer
x = 995,832,604.80
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1.5x scale
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.