Finding the Fourth Proportional to 426,011,313.97, 639,409,785.72 and 216,069,344.31
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Solution
The fourth proportional to 426,011,313.97, 639,409,785.72 and 216,069,344.31 is: 324,303,248.80
Step by Step Solution
- Step 1: Write the proportion equation
426,011,313.97 : 639,409,785.72 = 216,069,344.31 : x - Step 2: Convert to fraction form
426,011,313.97/639,409,785.72 = 216,069,344.31/x - Step 3: Cross multiply
426,011,313.97x = 639,409,785.72 × 216,069,344.31 - Step 4: Simplify right side
426,011,313.97x = 138,156,853,145,918,016 - Step 5: Solve for x
x = 138,156,853,145,918,016/426,011,313.97 - Step 6: Final answer
x = 324,303,248.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.