Finding the Fourth Proportional to 645,139.80, 967,709.70 and 487,675.80
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Solution
The fourth proportional to 645,139.80, 967,709.70 and 487,675.80 is: 731,513.70
Step by Step Solution
- Step 1: Write the proportion equation
645,139.80 : 967,709.70 = 487,675.80 : x - Step 2: Convert to fraction form
645,139.80/967,709.70 = 487,675.80/x - Step 3: Cross multiply
645,139.80x = 967,709.70 × 487,675.80 - Step 4: Simplify right side
645,139.80x = 471,928,602,115.26 - Step 5: Solve for x
x = 471,928,602,115.26/645,139.80 - Step 6: Final answer
x = 731,513.70
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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.