Finding the Fourth Proportional to 513,829,481.62, 709,085,348.61 and 278,880,115.38
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Solution
The fourth proportional to 513,829,481.62, 709,085,348.61 and 278,880,115.38 is: 384,854,919.60
Step by Step Solution
- Step 1: Write the proportion equation
513,829,481.62 : 709,085,348.61 = 278,880,115.38 : x - Step 2: Convert to fraction form
513,829,481.62/709,085,348.61 = 278,880,115.38/x - Step 3: Cross multiply
513,829,481.62x = 709,085,348.61 × 278,880,115.38 - Step 4: Simplify right side
513,829,481.62x = 197,749,803,834,624,320 - Step 5: Solve for x
x = 197,749,803,834,624,320/513,829,481.62 - Step 6: Final answer
x = 384,854,919.60
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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.