Finding the Fourth Proportional to 1,688,688.90, 2,330,394.17 and 914,328.09
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Solution
The fourth proportional to 1,688,688.90, 2,330,394.17 and 914,328.09 is: 1,261,774.65
Step by Step Solution
- Step 1: Write the proportion equation
1,688,688.90 : 2,330,394.17 = 914,328.09 : x - Step 2: Convert to fraction form
1,688,688.90/2,330,394.17 = 914,328.09/x - Step 3: Cross multiply
1,688,688.90x = 2,330,394.17 × 914,328.09 - Step 4: Simplify right side
1,688,688.90x = 2,130,744,845,831.59 - Step 5: Solve for x
x = 2,130,744,845,831.59/1,688,688.90 - Step 6: Final answer
x = 1,261,774.65
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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.