Finding the Fourth Proportional to 1,122,232, 1,548,474.56 and 638,768.96
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Solution
The fourth proportional to 1,122,232, 1,548,474.56 and 638,768.96 is: 881,384.14
Step by Step Solution
- Step 1: Write the proportion equation
1,122,232 : 1,548,474.56 = 638,768.96 : x - Step 2: Convert to fraction form
1,122,232/1,548,474.56 = 638,768.96/x - Step 3: Cross multiply
1,122,232x = 1,548,474.56 × 638,768.96 - Step 4: Simplify right side
1,122,232x = 989,117,484,277.66 - Step 5: Solve for x
x = 989,117,484,277.66/1,122,232 - Step 6: Final answer
x = 881,384.14
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Half scale
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Double scale
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Similar ratio
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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.