Finding the Fourth Proportional to 9,989,444.19, 13,785,432.99 and 5,405,765.57
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Solution
The fourth proportional to 9,989,444.19, 13,785,432.99 and 5,405,765.57 is: 7,459,956.48
Step by Step Solution
- Step 1: Write the proportion equation
9,989,444.19 : 13,785,432.99 = 5,405,765.57 : x - Step 2: Convert to fraction form
9,989,444.19/13,785,432.99 = 5,405,765.57/x - Step 3: Cross multiply
9,989,444.19x = 13,785,432.99 × 5,405,765.57 - Step 4: Simplify right side
9,989,444.19x = 74,520,818,955,957 - Step 5: Solve for x
x = 74,520,818,955,957/9,989,444.19 - Step 6: Final answer
x = 7,459,956.48
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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.