Finding the Fourth Proportional to 936,991,851.42, 1,292,294,794.86 and 823,719,149.40
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Solution
The fourth proportional to 936,991,851.42, 1,292,294,794.86 and 823,719,149.40 is: 1,136,069,612.11
Step by Step Solution
- Step 1: Write the proportion equation
936,991,851.42 : 1,292,294,794.86 = 823,719,149.40 : x - Step 2: Convert to fraction form
936,991,851.42/1,292,294,794.86 = 823,719,149.40/x - Step 3: Cross multiply
936,991,851.42x = 1,292,294,794.86 × 823,719,149.40 - Step 4: Simplify right side
936,991,851.42x = 1,064,487,969,196,126,592 - Step 5: Solve for x
x = 1,064,487,969,196,126,592/936,991,851.42 - Step 6: Final answer
x = 1,136,069,612.11
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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.