Finding the Fourth Proportional to 1,660,316,192.64, 2,490,479,016.90 and 479,992,758.70
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Solution
The fourth proportional to 1,660,316,192.64, 2,490,479,016.90 and 479,992,758.70 is: 719,990,504.88
Step by Step Solution
- Step 1: Write the proportion equation
1,660,316,192.64 : 2,490,479,016.90 = 479,992,758.70 : x - Step 2: Convert to fraction form
1,660,316,192.64/2,490,479,016.90 = 479,992,758.70/x - Step 3: Cross multiply
1,660,316,192.64x = 2,490,479,016.90 × 479,992,758.70 - Step 4: Simplify right side
1,660,316,192.64x = 1,195,411,893,793,842,432 - Step 5: Solve for x
x = 1,195,411,893,793,842,432/1,660,316,192.64 - Step 6: Final answer
x = 719,990,504.88
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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.