Finding the Fourth Proportional to 670,277.80, 1,005,416.70 and 390,341.80
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Solution
The fourth proportional to 670,277.80, 1,005,416.70 and 390,341.80 is: 585,512.70
Step by Step Solution
- Step 1: Write the proportion equation
670,277.80 : 1,005,416.70 = 390,341.80 : x - Step 2: Convert to fraction form
670,277.80/1,005,416.70 = 390,341.80/x - Step 3: Cross multiply
670,277.80x = 1,005,416.70 × 390,341.80 - Step 4: Simplify right side
670,277.80x = 392,456,164,428.06 - Step 5: Solve for x
x = 392,456,164,428.06/670,277.80 - Step 6: Final answer
x = 585,512.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.