Finding the Fourth Proportional to 442,921.70, 618,690.70 and 442,921.70
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Solution
The fourth proportional to 442,921.70, 618,690.70 and 442,921.70 is: 618,690.70
Step by Step Solution
- Step 1: Write the proportion equation
442,921.70 : 618,690.70 = 442,921.70 : x - Step 2: Convert to fraction form
442,921.70/618,690.70 = 442,921.70/x - Step 3: Cross multiply
442,921.70x = 618,690.70 × 442,921.70 - Step 4: Simplify right side
442,921.70x = 274,031,536,618.19 - Step 5: Solve for x
x = 274,031,536,618.19/442,921.70 - Step 6: Final answer
x = 618,690.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.