Finding the Fourth Proportional to 1,330,685,743.30, 1,996,028,614.95 and 986,311,975.30
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Solution
The fourth proportional to 1,330,685,743.30, 1,996,028,614.95 and 986,311,975.30 is: 1,479,467,962.95
Step by Step Solution
- Step 1: Write the proportion equation
1,330,685,743.30 : 1,996,028,614.95 = 986,311,975.30 : x - Step 2: Convert to fraction form
1,330,685,743.30/1,996,028,614.95 = 986,311,975.30/x - Step 3: Cross multiply
1,330,685,743.30x = 1,996,028,614.95 × 986,311,975.30 - Step 4: Simplify right side
1,330,685,743.30x = 1,968,706,925,966,657,536 - Step 5: Solve for x
x = 1,968,706,925,966,657,536/1,330,685,743.30 - Step 6: Final answer
x = 1,479,467,962.95
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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.