Finding the Fourth Proportional to 988,129.80, 1,363,623.93 and 535,420.80
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Solution
The fourth proportional to 988,129.80, 1,363,623.93 and 535,420.80 is: 738,883.31
Step by Step Solution
- Step 1: Write the proportion equation
988,129.80 : 1,363,623.93 = 535,420.80 : x - Step 2: Convert to fraction form
988,129.80/1,363,623.93 = 535,420.80/x - Step 3: Cross multiply
988,129.80x = 1,363,623.93 × 535,420.80 - Step 4: Simplify right side
988,129.80x = 730,112,615,499.74 - Step 5: Solve for x
x = 730,112,615,499.74/988,129.80 - Step 6: Final answer
x = 738,883.31
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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.