Finding the Fourth Proportional to 747,921.48, 1,121,257.71 and 348,356.58
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Solution
The fourth proportional to 747,921.48, 1,121,257.71 and 348,356.58 is: 522,243.99
Step by Step Solution
- Step 1: Write the proportion equation
747,921.48 : 1,121,257.71 = 348,356.58 : x - Step 2: Convert to fraction form
747,921.48/1,121,257.71 = 348,356.58/x - Step 3: Cross multiply
747,921.48x = 1,121,257.71 × 348,356.58 - Step 4: Simplify right side
747,921.48x = 390,597,501,154.23 - Step 5: Solve for x
x = 390,597,501,154.23/747,921.48 - Step 6: Final answer
x = 522,243.99
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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.