Finding the Fourth Proportional to 668,381.28, 922,221.63 and 423,437.28
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Solution
The fourth proportional to 668,381.28, 922,221.63 and 423,437.28 is: 584,251.88
Step by Step Solution
- Step 1: Write the proportion equation
668,381.28 : 922,221.63 = 423,437.28 : x - Step 2: Convert to fraction form
668,381.28/922,221.63 = 423,437.28/x - Step 3: Cross multiply
668,381.28x = 922,221.63 × 423,437.28 - Step 4: Simplify right side
668,381.28x = 390,503,018,564.37 - Step 5: Solve for x
x = 390,503,018,564.37/668,381.28 - Step 6: Final answer
x = 584,251.88
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1.5x scale
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.