Finding the Fourth Proportional to 1,239,978.97, 1,710,967.21 and 730,612.09
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Solution
The fourth proportional to 1,239,978.97, 1,710,967.21 and 730,612.09 is: 1,008,124.62
Step by Step Solution
- Step 1: Write the proportion equation
1,239,978.97 : 1,710,967.21 = 730,612.09 : x - Step 2: Convert to fraction form
1,239,978.97/1,710,967.21 = 730,612.09/x - Step 3: Cross multiply
1,239,978.97x = 1,710,967.21 × 730,612.09 - Step 4: Simplify right side
1,239,978.97x = 1,250,053,329,219.57 - Step 5: Solve for x
x = 1,250,053,329,219.57/1,239,978.97 - Step 6: Final answer
x = 1,008,124.62
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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.