Finding the Fourth Proportional to 639,438.17, 882,037.35 and 381,143.00
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Solution
The fourth proportional to 639,438.17, 882,037.35 and 381,143.00 is: 525,746.48
Step by Step Solution
- Step 1: Write the proportion equation
639,438.17 : 882,037.35 = 381,143.00 : x - Step 2: Convert to fraction form
639,438.17/882,037.35 = 381,143.00/x - Step 3: Cross multiply
639,438.17x = 882,037.35 × 381,143.00 - Step 4: Simplify right side
639,438.17x = 336,182,363,896.14 - Step 5: Solve for x
x = 336,182,363,896.14/639,438.17 - Step 6: Final answer
x = 525,746.48
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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.