Finding the Fourth Proportional to 498,948.18, 688,353.03 and 307,629.42
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Solution
The fourth proportional to 498,948.18, 688,353.03 and 307,629.42 is: 424,408.09
Step by Step Solution
- Step 1: Write the proportion equation
498,948.18 : 688,353.03 = 307,629.42 : x - Step 2: Convert to fraction form
498,948.18/688,353.03 = 307,629.42/x - Step 3: Cross multiply
498,948.18x = 688,353.03 × 307,629.42 - Step 4: Simplify right side
498,948.18x = 211,757,643,374.14 - Step 5: Solve for x
x = 211,757,643,374.14/498,948.18 - Step 6: Final answer
x = 424,408.09
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1.5x scale
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.