Finding the Fourth Proportional to 819,798,693.20, 1,229,698,039.80 and 740,720,272.40
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Solution
The fourth proportional to 819,798,693.20, 1,229,698,039.80 and 740,720,272.40 is: 1,111,080,408.60
Step by Step Solution
- Step 1: Write the proportion equation
819,798,693.20 : 1,229,698,039.80 = 740,720,272.40 : x - Step 2: Convert to fraction form
819,798,693.20/1,229,698,039.80 = 740,720,272.40/x - Step 3: Cross multiply
819,798,693.20x = 1,229,698,039.80 × 740,720,272.40 - Step 4: Simplify right side
819,798,693.20x = 910,862,267,010,401,920 - Step 5: Solve for x
x = 910,862,267,010,401,920/819,798,693.20 - Step 6: Final answer
x = 1,111,080,408.60
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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.