Finding the Fourth Proportional to 1,086,426,408.60, 1,630,064,765.70 and 396,403,414.20
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Solution
The fourth proportional to 1,086,426,408.60, 1,630,064,765.70 and 396,403,414.20 is: 594,760,246.41
Step by Step Solution
- Step 1: Write the proportion equation
1,086,426,408.60 : 1,630,064,765.70 = 396,403,414.20 : x - Step 2: Convert to fraction form
1,086,426,408.60/1,630,064,765.70 = 396,403,414.20/x - Step 3: Cross multiply
1,086,426,408.60x = 1,630,064,765.70 × 396,403,414.20 - Step 4: Simplify right side
1,086,426,408.60x = 646,163,238,490,603,008 - Step 5: Solve for x
x = 646,163,238,490,603,008/1,086,426,408.60 - Step 6: Final answer
x = 594,760,246.41
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Double scale
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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.