Finding the Fourth Proportional to 898,129.81, 1,239,455.69 and 490,259.17
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Solution
The fourth proportional to 898,129.81, 1,239,455.69 and 490,259.17 is: 676,577.61
Step by Step Solution
- Step 1: Write the proportion equation
898,129.81 : 1,239,455.69 = 490,259.17 : x - Step 2: Convert to fraction form
898,129.81/1,239,455.69 = 490,259.17/x - Step 3: Cross multiply
898,129.81x = 1,239,455.69 × 490,259.17 - Step 4: Simplify right side
898,129.81x = 607,654,517,831.18 - Step 5: Solve for x
x = 607,654,517,831.18/898,129.81 - Step 6: Final answer
x = 676,577.61
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Double scale
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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.