Finding the Fourth Proportional to 1,998,432,485.80, 2,997,648,728.70 and 1,964,420,261.80
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Solution
The fourth proportional to 1,998,432,485.80, 2,997,648,728.70 and 1,964,420,261.80 is: 2,946,630,392.70
Step by Step Solution
- Step 1: Write the proportion equation
1,998,432,485.80 : 2,997,648,728.70 = 1,964,420,261.80 : x - Step 2: Convert to fraction form
1,998,432,485.80/2,997,648,728.70 = 1,964,420,261.80/x - Step 3: Cross multiply
1,998,432,485.80x = 2,997,648,728.70 × 1,964,420,261.80 - Step 4: Simplify right side
1,998,432,485.80x = 5,888,641,900,417,290,240 - Step 5: Solve for x
x = 5,888,641,900,417,290,240/1,998,432,485.80 - Step 6: Final answer
x = 2,946,630,392.70
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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.