Finding the Fourth Proportional to 1,323,163,409.60, 1,981,721,805.60 and 778,967,825.60
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Solution
The fourth proportional to 1,323,163,409.60, 1,981,721,805.60 and 778,967,825.60 is: 1,166,671,867.32
Step by Step Solution
- Step 1: Write the proportion equation
1,323,163,409.60 : 1,981,721,805.60 = 778,967,825.60 : x - Step 2: Convert to fraction form
1,323,163,409.60/1,981,721,805.60 = 778,967,825.60/x - Step 3: Cross multiply
1,323,163,409.60x = 1,981,721,805.60 × 778,967,825.60 - Step 4: Simplify right side
1,323,163,409.60x = 1,543,697,525,852,337,920 - Step 5: Solve for x
x = 1,543,697,525,852,337,920/1,323,163,409.60 - Step 6: Final answer
x = 1,166,671,867.32
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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.