Finding the Fourth Proportional to 2,472,279,415.20, 3,708,419,122.80 and 919,249,380.90
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Solution
The fourth proportional to 2,472,279,415.20, 3,708,419,122.80 and 919,249,380.90 is: 1,378,874,071.35
Step by Step Solution
- Step 1: Write the proportion equation
2,472,279,415.20 : 3,708,419,122.80 = 919,249,380.90 : x - Step 2: Convert to fraction form
2,472,279,415.20/3,708,419,122.80 = 919,249,380.90/x - Step 3: Cross multiply
2,472,279,415.20x = 3,708,419,122.80 × 919,249,380.90 - Step 4: Simplify right side
2,472,279,415.20x = 3,408,961,982,751,621,120 - Step 5: Solve for x
x = 3,408,961,982,751,621,120/2,472,279,415.20 - Step 6: Final answer
x = 1,378,874,071.35
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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.