Finding the Fourth Proportional to 1,226,141.20, 1,692,122.70 and 742,432.96
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Solution
The fourth proportional to 1,226,141.20, 1,692,122.70 and 742,432.96 is: 1,024,586.45
Step by Step Solution
- Step 1: Write the proportion equation
1,226,141.20 : 1,692,122.70 = 742,432.96 : x - Step 2: Convert to fraction form
1,226,141.20/1,692,122.70 = 742,432.96/x - Step 3: Cross multiply
1,226,141.20x = 1,692,122.70 × 742,432.96 - Step 4: Simplify right side
1,226,141.20x = 1,256,287,664,844.19 - Step 5: Solve for x
x = 1,256,287,664,844.19/1,226,141.20 - Step 6: Final answer
x = 1,024,586.45
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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.