Finding the Fourth Proportional to 1,259,731,987.30, 1,889,597,980.95 and 996,704,121.70
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Solution
The fourth proportional to 1,259,731,987.30, 1,889,597,980.95 and 996,704,121.70 is: 1,495,056,182.55
Step by Step Solution
- Step 1: Write the proportion equation
1,259,731,987.30 : 1,889,597,980.95 = 996,704,121.70 : x - Step 2: Convert to fraction form
1,259,731,987.30/1,889,597,980.95 = 996,704,121.70/x - Step 3: Cross multiply
1,259,731,987.30x = 1,889,597,980.95 × 996,704,121.70 - Step 4: Simplify right side
1,259,731,987.30x = 1,883,370,095,968,863,232 - Step 5: Solve for x
x = 1,883,370,095,968,863,232/1,259,731,987.30 - Step 6: Final answer
x = 1,495,056,182.55
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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.