Finding the Fourth Proportional to 729,076.68, 1,006,128.54 and 406,800.36
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Solution
The fourth proportional to 729,076.68, 1,006,128.54 and 406,800.36 is: 561,386.02
Step by Step Solution
- Step 1: Write the proportion equation
729,076.68 : 1,006,128.54 = 406,800.36 : x - Step 2: Convert to fraction form
729,076.68/1,006,128.54 = 406,800.36/x - Step 3: Cross multiply
729,076.68x = 1,006,128.54 × 406,800.36 - Step 4: Simplify right side
729,076.68x = 409,293,452,278.27 - Step 5: Solve for x
x = 409,293,452,278.27/729,076.68 - Step 6: Final answer
x = 561,386.02
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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.