Finding the Fourth Proportional to 7,578,245.16, 10,457,854.74 and 4,140,412.20
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Solution
The fourth proportional to 7,578,245.16, 10,457,854.74 and 4,140,412.20 is: 5,713,701.32
Step by Step Solution
- Step 1: Write the proportion equation
7,578,245.16 : 10,457,854.74 = 4,140,412.20 : x - Step 2: Convert to fraction form
7,578,245.16/10,457,854.74 = 4,140,412.20/x - Step 3: Cross multiply
7,578,245.16x = 10,457,854.74 × 4,140,412.20 - Step 4: Simplify right side
7,578,245.16x = 43,299,829,351,323.83 - Step 5: Solve for x
x = 43,299,829,351,323.83/7,578,245.16 - Step 6: Final answer
x = 5,713,701.32
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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.