Finding the Fourth Proportional to 1,058,471,240.40, 1,587,706,860.60 and 331,682,734.80
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Solution
The fourth proportional to 1,058,471,240.40, 1,587,706,860.60 and 331,682,734.80 is: 497,524,102.20
Step by Step Solution
- Step 1: Write the proportion equation
1,058,471,240.40 : 1,587,706,860.60 = 331,682,734.80 : x - Step 2: Convert to fraction form
1,058,471,240.40/1,587,706,860.60 = 331,682,734.80/x - Step 3: Cross multiply
1,058,471,240.40x = 1,587,706,860.60 × 331,682,734.80 - Step 4: Simplify right side
1,058,471,240.40x = 526,614,953,584,530,368 - Step 5: Solve for x
x = 526,614,953,584,530,368/1,058,471,240.40 - Step 6: Final answer
x = 497,524,102.20
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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.