Finding the Fourth Proportional to 2,187,586,961.32, 3,018,890,177.94 and 1,295,564,423.80
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Solution
The fourth proportional to 2,187,586,961.32, 3,018,890,177.94 and 1,295,564,423.80 is: 1,787,890,850.99
Step by Step Solution
- Step 1: Write the proportion equation
2,187,586,961.32 : 3,018,890,177.94 = 1,295,564,423.80 : x - Step 2: Convert to fraction form
2,187,586,961.32/3,018,890,177.94 = 1,295,564,423.80/x - Step 3: Cross multiply
2,187,586,961.32x = 3,018,890,177.94 × 1,295,564,423.80 - Step 4: Simplify right side
2,187,586,961.32x = 3,911,166,713,898,315,264 - Step 5: Solve for x
x = 3,911,166,713,898,315,264/2,187,586,961.32 - Step 6: Final answer
x = 1,787,890,850.99
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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.