Finding the Fourth Proportional to 653,621.28, 901,857.45 and 381,565.70
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Solution
The fourth proportional to 653,621.28, 901,857.45 and 381,565.70 is: 526,478.99
Step by Step Solution
- Step 1: Write the proportion equation
653,621.28 : 901,857.45 = 381,565.70 : x - Step 2: Convert to fraction form
653,621.28/901,857.45 = 381,565.70/x - Step 3: Cross multiply
653,621.28x = 901,857.45 × 381,565.70 - Step 4: Simplify right side
653,621.28x = 344,117,871,464.11 - Step 5: Solve for x
x = 344,117,871,464.11/653,621.28 - Step 6: Final answer
x = 526,478.99
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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.