Finding the Fourth Proportional to 1,319,401.80, 1,979,102.70 and 572,905.80
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Solution
The fourth proportional to 1,319,401.80, 1,979,102.70 and 572,905.80 is: 859,358.70
Step by Step Solution
- Step 1: Write the proportion equation
1,319,401.80 : 1,979,102.70 = 572,905.80 : x - Step 2: Convert to fraction form
1,319,401.80/1,979,102.70 = 572,905.80/x - Step 3: Cross multiply
1,319,401.80x = 1,979,102.70 × 572,905.80 - Step 4: Simplify right side
1,319,401.80x = 1,133,839,415,625.66 - Step 5: Solve for x
x = 1,133,839,415,625.66/1,319,401.80 - Step 6: Final answer
x = 859,358.70
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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.