Finding the Fourth Proportional to 2,585,386,515.86, 3,878,624,501.28 and 838,453,036.67
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Solution
The fourth proportional to 2,585,386,515.86, 3,878,624,501.28 and 838,453,036.67 is: 1,257,856,212.70
Step by Step Solution
- Step 1: Write the proportion equation
2,585,386,515.86 : 3,878,624,501.28 = 838,453,036.67 : x - Step 2: Convert to fraction form
2,585,386,515.86/3,878,624,501.28 = 838,453,036.67/x - Step 3: Cross multiply
2,585,386,515.86x = 3,878,624,501.28 × 838,453,036.67 - Step 4: Simplify right side
2,585,386,515.86x = 3,252,044,491,200,880,128 - Step 5: Solve for x
x = 3,252,044,491,200,880,128/2,585,386,515.86 - Step 6: Final answer
x = 1,257,856,212.70
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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.