Finding the Fourth Proportional to 520,032,137.09, 717,689,750.15 and 285,128,198.41
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Solution
The fourth proportional to 520,032,137.09, 717,689,750.15 and 285,128,198.41 is: 393,501,806.68
Step by Step Solution
- Step 1: Write the proportion equation
520,032,137.09 : 717,689,750.15 = 285,128,198.41 : x - Step 2: Convert to fraction form
520,032,137.09/717,689,750.15 = 285,128,198.41/x - Step 3: Cross multiply
520,032,137.09x = 717,689,750.15 × 285,128,198.41 - Step 4: Simplify right side
520,032,137.09x = 204,633,585,474,299,776 - Step 5: Solve for x
x = 204,633,585,474,299,776/520,032,137.09 - Step 6: Final answer
x = 393,501,806.68
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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.