Finding the Fourth Proportional to 3,619,605,506.40, 5,432,095,645.20 and 1,440,135,784.80
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Solution
The fourth proportional to 3,619,605,506.40, 5,432,095,645.20 and 1,440,135,784.80 is: 2,161,272,909.79
Step by Step Solution
- Step 1: Write the proportion equation
3,619,605,506.40 : 5,432,095,645.20 = 1,440,135,784.80 : x - Step 2: Convert to fraction form
3,619,605,506.40/5,432,095,645.20 = 1,440,135,784.80/x - Step 3: Cross multiply
3,619,605,506.40x = 5,432,095,645.20 × 1,440,135,784.80 - Step 4: Simplify right side
3,619,605,506.40x = 7,822,955,325,108,763,648 - Step 5: Solve for x
x = 7,822,955,325,108,763,648/3,619,605,506.40 - Step 6: Final answer
x = 2,161,272,909.79
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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.