Finding the Fourth Proportional to 1,286,121.79, 1,774,720.19 and 742,432.74
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Solution
The fourth proportional to 1,286,121.79, 1,774,720.19 and 742,432.74 is: 1,024,483.35
Step by Step Solution
- Step 1: Write the proportion equation
1,286,121.79 : 1,774,720.19 = 742,432.74 : x - Step 2: Convert to fraction form
1,286,121.79/1,774,720.19 = 742,432.74/x - Step 3: Cross multiply
1,286,121.79x = 1,774,720.19 × 742,432.74 - Step 4: Simplify right side
1,286,121.79x = 1,317,610,364,521.42 - Step 5: Solve for x
x = 1,317,610,364,521.42/1,286,121.79 - Step 6: Final answer
x = 1,024,483.35
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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.