Finding the Fourth Proportional to 885,724.63, 1,221,878.99 and 522,905.42
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Solution
The fourth proportional to 885,724.63, 1,221,878.99 and 522,905.42 is: 721,360.94
Step by Step Solution
- Step 1: Write the proportion equation
885,724.63 : 1,221,878.99 = 522,905.42 : x - Step 2: Convert to fraction form
885,724.63/1,221,878.99 = 522,905.42/x - Step 3: Cross multiply
885,724.63x = 1,221,878.99 × 522,905.42 - Step 4: Simplify right side
885,724.63x = 638,927,150,817.09 - Step 5: Solve for x
x = 638,927,150,817.09/885,724.63 - Step 6: Final answer
x = 721,360.94
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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.