Finding the Fourth Proportional to 7,180,109.53, 9,908,536.75 and 3,916,923.08
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Solution
The fourth proportional to 7,180,109.53, 9,908,536.75 and 3,916,923.08 is: 5,405,345.99
Step by Step Solution
- Step 1: Write the proportion equation
7,180,109.53 : 9,908,536.75 = 3,916,923.08 : x - Step 2: Convert to fraction form
7,180,109.53/9,908,536.75 = 3,916,923.08/x - Step 3: Cross multiply
7,180,109.53x = 9,908,536.75 × 3,916,923.08 - Step 4: Simplify right side
7,180,109.53x = 38,810,976,225,768.20 - Step 5: Solve for x
x = 38,810,976,225,768.20/7,180,109.53 - Step 6: Final answer
x = 5,405,345.99
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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.