Finding the Fourth Proportional to 1,630,272,562.20, 2,445,408,843.30 and 539,755,630.20
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Solution
The fourth proportional to 1,630,272,562.20, 2,445,408,843.30 and 539,755,630.20 is: 809,633,445.30
Step by Step Solution
- Step 1: Write the proportion equation
1,630,272,562.20 : 2,445,408,843.30 = 539,755,630.20 : x - Step 2: Convert to fraction form
1,630,272,562.20/2,445,408,843.30 = 539,755,630.20/x - Step 3: Cross multiply
1,630,272,562.20x = 2,445,408,843.30 × 539,755,630.20 - Step 4: Simplify right side
1,630,272,562.20x = 1,319,923,191,312,044,800 - Step 5: Solve for x
x = 1,319,923,191,312,044,800/1,630,272,562.20 - Step 6: Final answer
x = 809,633,445.30
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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.