Finding the Fourth Proportional to 2,719,721,564.80, 4,079,582,347.20 and 879,660,246.40
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Solution
The fourth proportional to 2,719,721,564.80, 4,079,582,347.20 and 879,660,246.40 is: 1,319,490,369.60
Step by Step Solution
- Step 1: Write the proportion equation
2,719,721,564.80 : 4,079,582,347.20 = 879,660,246.40 : x - Step 2: Convert to fraction form
2,719,721,564.80/4,079,582,347.20 = 879,660,246.40/x - Step 3: Cross multiply
2,719,721,564.80x = 4,079,582,347.20 × 879,660,246.40 - Step 4: Simplify right side
2,719,721,564.80x = 3,588,646,412,747,042,304 - Step 5: Solve for x
x = 3,588,646,412,747,042,304/2,719,721,564.80 - Step 6: Final answer
x = 1,319,490,369.60
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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.