Finding the Fourth Proportional to 1,286,129.22, 1,774,730.40 and 742,440.18
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Solution
The fourth proportional to 1,286,129.22, 1,774,730.40 and 742,440.18 is: 1,024,493.60
Step by Step Solution
- Step 1: Write the proportion equation
1,286,129.22 : 1,774,730.40 = 742,440.18 : x - Step 2: Convert to fraction form
1,286,129.22/1,774,730.40 = 742,440.18/x - Step 3: Cross multiply
1,286,129.22x = 1,774,730.40 × 742,440.18 - Step 4: Simplify right side
1,286,129.22x = 1,317,631,157,627.47 - Step 5: Solve for x
x = 1,317,631,157,627.47/1,286,129.22 - Step 6: Final answer
x = 1,024,493.60
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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.