Finding the Fourth Proportional to 473,809.71, 713,911.29 and 391,415.70
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Solution
The fourth proportional to 473,809.71, 713,911.29 and 391,415.70 is: 589,764.37
Step by Step Solution
- Step 1: Write the proportion equation
473,809.71 : 713,911.29 = 391,415.70 : x - Step 2: Convert to fraction form
473,809.71/713,911.29 = 391,415.70/x - Step 3: Cross multiply
473,809.71x = 713,911.29 × 391,415.70 - Step 4: Simplify right side
473,809.71x = 279,436,087,313.25 - Step 5: Solve for x
x = 279,436,087,313.25/473,809.71 - Step 6: Final answer
x = 589,764.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.