Finding the Fourth Proportional to 442,456,876.80, 663,685,315.20 and 135,748,497.60
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Solution
The fourth proportional to 442,456,876.80, 663,685,315.20 and 135,748,497.60 is: 203,622,746.40
Step by Step Solution
- Step 1: Write the proportion equation
442,456,876.80 : 663,685,315.20 = 135,748,497.60 : x - Step 2: Convert to fraction form
442,456,876.80/663,685,315.20 = 135,748,497.60/x - Step 3: Cross multiply
442,456,876.80x = 663,685,315.20 × 135,748,497.60 - Step 4: Simplify right side
442,456,876.80x = 90,094,284,417,582,448 - Step 5: Solve for x
x = 90,094,284,417,582,448/442,456,876.80 - Step 6: Final answer
x = 203,622,746.40
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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.