Finding the Fourth Proportional to 742,171.74, 1,113,295.68 and 209,731.20
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Solution
The fourth proportional to 742,171.74, 1,113,295.68 and 209,731.20 is: 314,607.56
Step by Step Solution
- Step 1: Write the proportion equation
742,171.74 : 1,113,295.68 = 209,731.20 : x - Step 2: Convert to fraction form
742,171.74/1,113,295.68 = 209,731.20/x - Step 3: Cross multiply
742,171.74x = 1,113,295.68 × 209,731.20 - Step 4: Simplify right side
742,171.74x = 233,492,838,921.22 - Step 5: Solve for x
x = 233,492,838,921.22/742,171.74 - Step 6: Final answer
x = 314,607.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.