Finding the Fourth Proportional to 8,889,432.30, 13,334,148.45 and 6,649,944.30
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Solution
The fourth proportional to 8,889,432.30, 13,334,148.45 and 6,649,944.30 is: 9,974,916.45
Step by Step Solution
- Step 1: Write the proportion equation
8,889,432.30 : 13,334,148.45 = 6,649,944.30 : x - Step 2: Convert to fraction form
8,889,432.30/13,334,148.45 = 6,649,944.30/x - Step 3: Cross multiply
8,889,432.30x = 13,334,148.45 × 6,649,944.30 - Step 4: Simplify right side
8,889,432.30x = 88,671,344,480,431.33 - Step 5: Solve for x
x = 88,671,344,480,431.33/8,889,432.30 - Step 6: Final answer
x = 9,974,916.45
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.