Finding the Fourth Proportional to 1,553,982,959.20, 2,330,974,438.80 and 405,125,615.20
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Solution
The fourth proportional to 1,553,982,959.20, 2,330,974,438.80 and 405,125,615.20 is: 607,688,422.80
Step by Step Solution
- Step 1: Write the proportion equation
1,553,982,959.20 : 2,330,974,438.80 = 405,125,615.20 : x - Step 2: Convert to fraction form
1,553,982,959.20/2,330,974,438.80 = 405,125,615.20/x - Step 3: Cross multiply
1,553,982,959.20x = 2,330,974,438.80 × 405,125,615.20 - Step 4: Simplify right side
1,553,982,959.20x = 944,337,453,534,324,736 - Step 5: Solve for x
x = 944,337,453,534,324,736/1,553,982,959.20 - Step 6: Final answer
x = 607,688,422.80
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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.