Finding the Fourth Proportional to 1,240,483,515.20, 1,711,878,731.64 and 683,586,491.84
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Solution
The fourth proportional to 1,240,483,515.20, 1,711,878,731.64 and 683,586,491.84 is: 943,355,685.33
Step by Step Solution
- Step 1: Write the proportion equation
1,240,483,515.20 : 1,711,878,731.64 = 683,586,491.84 : x - Step 2: Convert to fraction form
1,240,483,515.20/1,711,878,731.64 = 683,586,491.84/x - Step 3: Cross multiply
1,240,483,515.20x = 1,711,878,731.64 × 683,586,491.84 - Step 4: Simplify right side
1,240,483,515.20x = 1,170,217,176,617,296,640 - Step 5: Solve for x
x = 1,170,217,176,617,296,640/1,240,483,515.20 - Step 6: Final answer
x = 943,355,685.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.