Finding the Fourth Proportional to 7,128,956.55, 9,837,950.91 and 3,865,765.80
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Solution
The fourth proportional to 7,128,956.55, 9,837,950.91 and 3,865,765.80 is: 5,334,751.86
Step by Step Solution
- Step 1: Write the proportion equation
7,128,956.55 : 9,837,950.91 = 3,865,765.80 : x - Step 2: Convert to fraction form
7,128,956.55/9,837,950.91 = 3,865,765.80/x - Step 3: Cross multiply
7,128,956.55x = 9,837,950.91 × 3,865,765.80 - Step 4: Simplify right side
7,128,956.55x = 38,031,214,203,224.66 - Step 5: Solve for x
x = 38,031,214,203,224.66/7,128,956.55 - Step 6: Final answer
x = 5,334,751.86
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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.