Finding the Fourth Proportional to 725,119.68, 1,000,757.42 and 438,641.81
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Solution
The fourth proportional to 725,119.68, 1,000,757.42 and 438,641.81 is: 605,381.50
Step by Step Solution
- Step 1: Write the proportion equation
725,119.68 : 1,000,757.42 = 438,641.81 : x - Step 2: Convert to fraction form
725,119.68/1,000,757.42 = 438,641.81/x - Step 3: Cross multiply
725,119.68x = 1,000,757.42 × 438,641.81 - Step 4: Simplify right side
725,119.68x = 438,974,038,882.73 - Step 5: Solve for x
x = 438,974,038,882.73/725,119.68 - Step 6: Final answer
x = 605,381.50
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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.