Finding the Fourth Proportional to 663,740.21, 915,959.79 and 361,934.21
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Solution
The fourth proportional to 663,740.21, 915,959.79 and 361,934.21 is: 499,468.28
Step by Step Solution
- Step 1: Write the proportion equation
663,740.21 : 915,959.79 = 361,934.21 : x - Step 2: Convert to fraction form
663,740.21/915,959.79 = 361,934.21/x - Step 3: Cross multiply
663,740.21x = 915,959.79 × 361,934.21 - Step 4: Simplify right side
663,740.21x = 331,517,182,985.42 - Step 5: Solve for x
x = 331,517,182,985.42/663,740.21 - Step 6: Final answer
x = 499,468.28
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1.5x scale
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.