Finding the Fourth Proportional to 1,621,883,975.81, 2,432,829,950.43 and 457,358,570.15
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Solution
The fourth proportional to 1,621,883,975.81, 2,432,829,950.43 and 457,358,570.15 is: 686,038,979.44
Step by Step Solution
- Step 1: Write the proportion equation
1,621,883,975.81 : 2,432,829,950.43 = 457,358,570.15 : x - Step 2: Convert to fraction form
1,621,883,975.81/2,432,829,950.43 = 457,358,570.15/x - Step 3: Cross multiply
1,621,883,975.81x = 2,432,829,950.43 × 457,358,570.15 - Step 4: Simplify right side
1,621,883,975.81x = 1,112,675,627,540,678,016 - Step 5: Solve for x
x = 1,112,675,627,540,678,016/1,621,883,975.81 - Step 6: Final answer
x = 686,038,979.44
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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.