Finding the Fourth Proportional to 7,719,811.21, 10,654,617.18 and 4,283,159.41
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Solution
The fourth proportional to 7,719,811.21, 10,654,617.18 and 4,283,159.41 is: 5,911,468.89
Step by Step Solution
- Step 1: Write the proportion equation
7,719,811.21 : 10,654,617.18 = 4,283,159.41 : x - Step 2: Convert to fraction form
7,719,811.21/10,654,617.18 = 4,283,159.41/x - Step 3: Cross multiply
7,719,811.21x = 10,654,617.18 × 4,283,159.41 - Step 4: Simplify right side
7,719,811.21x = 45,635,423,834,464.66 - Step 5: Solve for x
x = 45,635,423,834,464.66/7,719,811.21 - Step 6: Final answer
x = 5,911,468.89
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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.