Finding the Fourth Proportional to 9,310,207.81, 12,847,885.05 and 5,390,129.11
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Solution
The fourth proportional to 9,310,207.81, 12,847,885.05 and 5,390,129.11 is: 7,438,261.38
Step by Step Solution
- Step 1: Write the proportion equation
9,310,207.81 : 12,847,885.05 = 5,390,129.11 : x - Step 2: Convert to fraction form
9,310,207.81/12,847,885.05 = 5,390,129.11/x - Step 3: Cross multiply
9,310,207.81x = 12,847,885.05 × 5,390,129.11 - Step 4: Simplify right side
9,310,207.81x = 69,251,759,209,938.81 - Step 5: Solve for x
x = 69,251,759,209,938.81/9,310,207.81 - Step 6: Final answer
x = 7,438,261.38
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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.