Finding the Fourth Proportional to 1,383,713.55, 1,908,798.62 and 1,125,878.40
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Solution
The fourth proportional to 1,383,713.55, 1,908,798.62 and 1,125,878.40 is: 1,553,121.40
Step by Step Solution
- Step 1: Write the proportion equation
1,383,713.55 : 1,908,798.62 = 1,125,878.40 : x - Step 2: Convert to fraction form
1,383,713.55/1,908,798.62 = 1,125,878.40/x - Step 3: Cross multiply
1,383,713.55x = 1,908,798.62 × 1,125,878.40 - Step 4: Simplify right side
1,383,713.55x = 2,149,075,130,578.42 - Step 5: Solve for x
x = 2,149,075,130,578.42/1,383,713.55 - Step 6: Final answer
x = 1,553,121.40
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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.