Finding the Fourth Proportional to 720,316,247.04, 993,959,893.60 and 398,393,058.26
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Solution
The fourth proportional to 720,316,247.04, 993,959,893.60 and 398,393,058.26 is: 549,740,094.62
Step by Step Solution
- Step 1: Write the proportion equation
720,316,247.04 : 993,959,893.60 = 398,393,058.26 : x - Step 2: Convert to fraction form
720,316,247.04/993,959,893.60 = 398,393,058.26/x - Step 3: Cross multiply
720,316,247.04x = 993,959,893.60 × 398,393,058.26 - Step 4: Simplify right side
720,316,247.04x = 395,986,721,800,577,088 - Step 5: Solve for x
x = 395,986,721,800,577,088/720,316,247.04 - Step 6: Final answer
x = 549,740,094.62
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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.