Finding the Fourth Proportional to 1,329,698,901.60, 1,994,548,352.40 and 1,258,273,231.20
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Solution
The fourth proportional to 1,329,698,901.60, 1,994,548,352.40 and 1,258,273,231.20 is: 1,887,409,846.80
Step by Step Solution
- Step 1: Write the proportion equation
1,329,698,901.60 : 1,994,548,352.40 = 1,258,273,231.20 : x - Step 2: Convert to fraction form
1,329,698,901.60/1,994,548,352.40 = 1,258,273,231.20/x - Step 3: Cross multiply
1,329,698,901.60x = 1,994,548,352.40 × 1,258,273,231.20 - Step 4: Simplify right side
1,329,698,901.60x = 2,509,686,800,158,984,704 - Step 5: Solve for x
x = 2,509,686,800,158,984,704/1,329,698,901.60 - Step 6: Final answer
x = 1,887,409,846.80
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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.