Finding the Fourth Proportional to 2,118,889,140.45, 3,178,333,710.68 and 1,659,220,231.65
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Solution
The fourth proportional to 2,118,889,140.45, 3,178,333,710.68 and 1,659,220,231.65 is: 2,488,830,347.48
Step by Step Solution
- Step 1: Write the proportion equation
2,118,889,140.45 : 3,178,333,710.68 = 1,659,220,231.65 : x - Step 2: Convert to fraction form
2,118,889,140.45/3,178,333,710.68 = 1,659,220,231.65/x - Step 3: Cross multiply
2,118,889,140.45x = 3,178,333,710.68 × 1,659,220,231.65 - Step 4: Simplify right side
2,118,889,140.45x = 5,273,555,595,695,473,664 - Step 5: Solve for x
x = 5,273,555,595,695,473,664/2,118,889,140.45 - Step 6: Final answer
x = 2,488,830,347.48
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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.