Finding the Fourth Proportional to 7,221,861.68, 9,960,357.68 and 6,348,829.76
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Solution
The fourth proportional to 7,221,861.68, 9,960,357.68 and 6,348,829.76 is: 8,756,276.16
Step by Step Solution
- Step 1: Write the proportion equation
7,221,861.68 : 9,960,357.68 = 6,348,829.76 : x - Step 2: Convert to fraction form
7,221,861.68/9,960,357.68 = 6,348,829.76/x - Step 3: Cross multiply
7,221,861.68x = 9,960,357.68 × 6,348,829.76 - Step 4: Simplify right side
7,221,861.68x = 63,236,615,259,028.55 - Step 5: Solve for x
x = 63,236,615,259,028.55/7,221,861.68 - Step 6: Final answer
x = 8,756,276.16
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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.