Finding the Fourth Proportional to 1,036,157,587.90, 1,554,236,381.85 and 422,407,239.10
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Solution
The fourth proportional to 1,036,157,587.90, 1,554,236,381.85 and 422,407,239.10 is: 633,610,858.65
Step by Step Solution
- Step 1: Write the proportion equation
1,036,157,587.90 : 1,554,236,381.85 = 422,407,239.10 : x - Step 2: Convert to fraction form
1,036,157,587.90/1,554,236,381.85 = 422,407,239.10/x - Step 3: Cross multiply
1,036,157,587.90x = 1,554,236,381.85 × 422,407,239.10 - Step 4: Simplify right side
1,036,157,587.90x = 656,520,698,966,031,872 - Step 5: Solve for x
x = 656,520,698,966,031,872/1,036,157,587.90 - Step 6: Final answer
x = 633,610,858.65
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Double scale
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Similar ratio
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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.