Finding the Fourth Proportional to 1,389,439.13, 1,917,425.99 and 753,535.13
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Solution
The fourth proportional to 1,389,439.13, 1,917,425.99 and 753,535.13 is: 1,039,878.47
Step by Step Solution
- Step 1: Write the proportion equation
1,389,439.13 : 1,917,425.99 = 753,535.13 : x - Step 2: Convert to fraction form
1,389,439.13/1,917,425.99 = 753,535.13/x - Step 3: Cross multiply
1,389,439.13x = 1,917,425.99 × 753,535.13 - Step 4: Simplify right side
1,389,439.13x = 1,444,847,834,936.74 - Step 5: Solve for x
x = 1,444,847,834,936.74/1,389,439.13 - Step 6: Final answer
x = 1,039,878.47
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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.