Finding the Fourth Proportional to 725,703.12, 1,087,189.18 and 425,291.33
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Solution
The fourth proportional to 725,703.12, 1,087,189.18 and 425,291.33 is: 637,136.76
Step by Step Solution
- Step 1: Write the proportion equation
725,703.12 : 1,087,189.18 = 425,291.33 : x - Step 2: Convert to fraction form
725,703.12/1,087,189.18 = 425,291.33/x - Step 3: Cross multiply
725,703.12x = 1,087,189.18 × 425,291.33 - Step 4: Simplify right side
725,703.12x = 462,372,133,978.55 - Step 5: Solve for x
x = 462,372,133,978.55/725,703.12 - Step 6: Final answer
x = 637,136.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.