Finding the Fourth Proportional to 1,455,829,331.20, 2,183,743,996.80 and 639,535,955.20
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Solution
The fourth proportional to 1,455,829,331.20, 2,183,743,996.80 and 639,535,955.20 is: 959,303,932.80
Step by Step Solution
- Step 1: Write the proportion equation
1,455,829,331.20 : 2,183,743,996.80 = 639,535,955.20 : x - Step 2: Convert to fraction form
1,455,829,331.20/2,183,743,996.80 = 639,535,955.20/x - Step 3: Cross multiply
1,455,829,331.20x = 2,183,743,996.80 × 639,535,955.20 - Step 4: Simplify right side
1,455,829,331.20x = 1,396,582,802,905,753,856 - Step 5: Solve for x
x = 1,396,582,802,905,753,856/1,455,829,331.20 - Step 6: Final answer
x = 959,303,932.80
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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.