Finding the Fourth Proportional to 387,470,754.66, 534,713,823.45 and 211,257,320.70
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Solution
The fourth proportional to 387,470,754.66, 534,713,823.45 and 211,257,320.70 is: 291,537,382.69
Step by Step Solution
- Step 1: Write the proportion equation
387,470,754.66 : 534,713,823.45 = 211,257,320.70 : x - Step 2: Convert to fraction form
387,470,754.66/534,713,823.45 = 211,257,320.70/x - Step 3: Cross multiply
387,470,754.66x = 534,713,823.45 × 211,257,320.70 - Step 4: Simplify right side
387,470,754.66x = 112,962,209,683,299,824 - Step 5: Solve for x
x = 112,962,209,683,299,824/387,470,754.66 - Step 6: Final answer
x = 291,537,382.69
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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.