Finding the Fourth Proportional to 638,625.89, 869,497.98 and 636,632.99
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Solution
The fourth proportional to 638,625.89, 869,497.98 and 636,632.99 is: 866,784.61
Step by Step Solution
- Step 1: Write the proportion equation
638,625.89 : 869,497.98 = 636,632.99 : x - Step 2: Convert to fraction form
638,625.89/869,497.98 = 636,632.99/x - Step 3: Cross multiply
638,625.89x = 869,497.98 × 636,632.99 - Step 4: Simplify right side
638,625.89x = 553,551,095,332.11 - Step 5: Solve for x
x = 553,551,095,332.11/638,625.89 - Step 6: Final answer
x = 866,784.61
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Why These Related Problems?
These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.