Finding the Fourth Proportional to 763,459.68, 1,145,323.68 and 290,186.40
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Solution
The fourth proportional to 763,459.68, 1,145,323.68 and 290,186.40 is: 435,330.59
Step by Step Solution
- Step 1: Write the proportion equation
763,459.68 : 1,145,323.68 = 290,186.40 : x - Step 2: Convert to fraction form
763,459.68/1,145,323.68 = 290,186.40/x - Step 3: Cross multiply
763,459.68x = 1,145,323.68 × 290,186.40 - Step 4: Simplify right side
763,459.68x = 332,357,355,533.95 - Step 5: Solve for x
x = 332,357,355,533.95/763,459.68 - Step 6: Final answer
x = 435,330.59
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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.