Finding the Fourth Proportional to 725,128.80, 1,000,837.80 and 402,949.68
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Solution
The fourth proportional to 725,128.80, 1,000,837.80 and 402,949.68 is: 556,159.50
Step by Step Solution
- Step 1: Write the proportion equation
725,128.80 : 1,000,837.80 = 402,949.68 : x - Step 2: Convert to fraction form
725,128.80/1,000,837.80 = 402,949.68/x - Step 3: Cross multiply
725,128.80x = 1,000,837.80 × 402,949.68 - Step 4: Simplify right side
725,128.80x = 403,287,271,241.90 - Step 5: Solve for x
x = 403,287,271,241.90/725,128.80 - Step 6: Final answer
x = 556,159.50
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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.