Finding the Fourth Proportional to 717,869,147.64, 990,660,124.62 and 387,844,549.08
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Solution
The fourth proportional to 717,869,147.64, 990,660,124.62 and 387,844,549.08 is: 535,225,856.39
Step by Step Solution
- Step 1: Write the proportion equation
717,869,147.64 : 990,660,124.62 = 387,844,549.08 : x - Step 2: Convert to fraction form
717,869,147.64/990,660,124.62 = 387,844,549.08/x - Step 3: Cross multiply
717,869,147.64x = 990,660,124.62 × 387,844,549.08 - Step 4: Simplify right side
717,869,147.64x = 384,222,129,324,780,480 - Step 5: Solve for x
x = 384,222,129,324,780,480/717,869,147.64 - Step 6: Final answer
x = 535,225,856.39
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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.