Finding the Fourth Proportional to 1,146,128,231.92, 1,581,641,830.28 and 637,487,515.12
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Solution
The fourth proportional to 1,146,128,231.92, 1,581,641,830.28 and 637,487,515.12 is: 879,724,355.54
Step by Step Solution
- Step 1: Write the proportion equation
1,146,128,231.92 : 1,581,641,830.28 = 637,487,515.12 : x - Step 2: Convert to fraction form
1,146,128,231.92/1,581,641,830.28 = 637,487,515.12/x - Step 3: Cross multiply
1,146,128,231.92x = 1,581,641,830.28 × 637,487,515.12 - Step 4: Simplify right side
1,146,128,231.92x = 1,008,276,920,195,046,016 - Step 5: Solve for x
x = 1,008,276,920,195,046,016/1,146,128,231.92 - Step 6: Final answer
x = 879,724,355.54
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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.