Finding the Fourth Proportional to 1,133,349.08, 1,563,670.74 and 643,239.80
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Solution
The fourth proportional to 1,133,349.08, 1,563,670.74 and 643,239.80 is: 887,471.72
Step by Step Solution
- Step 1: Write the proportion equation
1,133,349.08 : 1,563,670.74 = 643,239.80 : x - Step 2: Convert to fraction form
1,133,349.08/1,563,670.74 = 643,239.80/x - Step 3: Cross multiply
1,133,349.08x = 1,563,670.74 × 643,239.80 - Step 4: Simplify right side
1,133,349.08x = 1,005,815,254,063.45 - Step 5: Solve for x
x = 1,005,815,254,063.45/1,133,349.08 - Step 6: Final answer
x = 887,471.72
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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.