Finding the Fourth Proportional to 1,369,418,549.12, 1,889,797,597.76 and 782,720,282.24
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Solution
The fourth proportional to 1,369,418,549.12, 1,889,797,597.76 and 782,720,282.24 is: 1,080,153,989.48
Step by Step Solution
- Step 1: Write the proportion equation
1,369,418,549.12 : 1,889,797,597.76 = 782,720,282.24 : x - Step 2: Convert to fraction form
1,369,418,549.12/1,889,797,597.76 = 782,720,282.24/x - Step 3: Cross multiply
1,369,418,549.12x = 1,889,797,597.76 × 782,720,282.24 - Step 4: Simplify right side
1,369,418,549.12x = 1,479,182,909,095,181,312 - Step 5: Solve for x
x = 1,479,182,909,095,181,312/1,369,418,549.12 - Step 6: Final answer
x = 1,080,153,989.48
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1.5x scale
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.