Finding the Fourth Proportional to 19,423,218.30, 29,134,827.45 and 6,639,474.30
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Solution
The fourth proportional to 19,423,218.30, 29,134,827.45 and 6,639,474.30 is: 9,959,211.45
Step by Step Solution
- Step 1: Write the proportion equation
19,423,218.30 : 29,134,827.45 = 6,639,474.30 : x - Step 2: Convert to fraction form
19,423,218.30/29,134,827.45 = 6,639,474.30/x - Step 3: Cross multiply
19,423,218.30x = 29,134,827.45 × 6,639,474.30 - Step 4: Simplify right side
19,423,218.30x = 193,439,938,089,209.53 - Step 5: Solve for x
x = 193,439,938,089,209.53/19,423,218.30 - Step 6: Final answer
x = 9,959,211.45
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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.