Finding the Fourth Proportional to 639,463.08, 882,249.47 and 455,730.59
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Solution
The fourth proportional to 639,463.08, 882,249.47 and 455,730.59 is: 628,758.85
Step by Step Solution
- Step 1: Write the proportion equation
639,463.08 : 882,249.47 = 455,730.59 : x - Step 2: Convert to fraction form
639,463.08/882,249.47 = 455,730.59/x - Step 3: Cross multiply
639,463.08x = 882,249.47 × 455,730.59 - Step 4: Simplify right side
639,463.08x = 402,068,070,423.99 - Step 5: Solve for x
x = 402,068,070,423.99/639,463.08 - Step 6: Final answer
x = 628,758.85
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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.