Finding the Fourth Proportional to 775,980.69, 1,070,946.56 and 470,048.09
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Solution
The fourth proportional to 775,980.69, 1,070,946.56 and 470,048.09 is: 648,722.82
Step by Step Solution
- Step 1: Write the proportion equation
775,980.69 : 1,070,946.56 = 470,048.09 : x - Step 2: Convert to fraction form
775,980.69/1,070,946.56 = 470,048.09/x - Step 3: Cross multiply
775,980.69x = 1,070,946.56 × 470,048.09 - Step 4: Simplify right side
775,980.69x = 503,396,380,840.46 - Step 5: Solve for x
x = 503,396,380,840.46/775,980.69 - Step 6: Final answer
x = 648,722.82
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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.