Finding the Fourth Proportional to 1,528,635.55, 2,109,523.88 and 840,351.76
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Solution
The fourth proportional to 1,528,635.55, 2,109,523.88 and 840,351.76 is: 1,159,689.18
Step by Step Solution
- Step 1: Write the proportion equation
1,528,635.55 : 2,109,523.88 = 840,351.76 : x - Step 2: Convert to fraction form
1,528,635.55/2,109,523.88 = 840,351.76/x - Step 3: Cross multiply
1,528,635.55x = 2,109,523.88 × 840,351.76 - Step 4: Simplify right side
1,528,635.55x = 1,772,742,111,649.68 - Step 5: Solve for x
x = 1,772,742,111,649.68/1,528,635.55 - Step 6: Final answer
x = 1,159,689.18
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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.