Finding the Fourth Proportional to 710,259.12, 980,120.07 and 387,964.62
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Solution
The fourth proportional to 710,259.12, 980,120.07 and 387,964.62 is: 535,370.68
Step by Step Solution
- Step 1: Write the proportion equation
710,259.12 : 980,120.07 = 387,964.62 : x - Step 2: Convert to fraction form
710,259.12/980,120.07 = 387,964.62/x - Step 3: Cross multiply
710,259.12x = 980,120.07 × 387,964.62 - Step 4: Simplify right side
710,259.12x = 380,251,910,511.92 - Step 5: Solve for x
x = 380,251,910,511.92/710,259.12 - Step 6: Final answer
x = 535,370.68
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1.5x scale
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.