Finding the Fourth Proportional to 1,970,145.12, 2,955,385.35 and 621,947.10
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Solution
The fourth proportional to 1,970,145.12, 2,955,385.35 and 621,947.10 is: 932,973.58
Step by Step Solution
- Step 1: Write the proportion equation
1,970,145.12 : 2,955,385.35 = 621,947.10 : x - Step 2: Convert to fraction form
1,970,145.12/2,955,385.35 = 621,947.10/x - Step 3: Cross multiply
1,970,145.12x = 2,955,385.35 × 621,947.10 - Step 4: Simplify right side
1,970,145.12x = 1,838,093,347,814.99 - Step 5: Solve for x
x = 1,838,093,347,814.99/1,970,145.12 - Step 6: Final answer
x = 932,973.58
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1.5x scale
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.