Finding the Fourth Proportional to 9,989,557.48, 13,785,588.89 and 5,405,878.99
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Solution
The fourth proportional to 9,989,557.48, 13,785,588.89 and 5,405,878.99 is: 7,460,112.77
Step by Step Solution
- Step 1: Write the proportion equation
9,989,557.48 : 13,785,588.89 = 5,405,878.99 : x - Step 2: Convert to fraction form
9,989,557.48/13,785,588.89 = 5,405,878.99/x - Step 3: Cross multiply
9,989,557.48x = 13,785,588.89 × 5,405,878.99 - Step 4: Simplify right side
9,989,557.48x = 74,523,225,345,228.42 - Step 5: Solve for x
x = 74,523,225,345,228.42/9,989,557.48 - Step 6: Final answer
x = 7,460,112.77
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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.