Finding the Fourth Proportional to 667,901.82, 921,798.99 and 413,335.02
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Solution
The fourth proportional to 667,901.82, 921,798.99 and 413,335.02 is: 570,460.80
Step by Step Solution
- Step 1: Write the proportion equation
667,901.82 : 921,798.99 = 413,335.02 : x - Step 2: Convert to fraction form
667,901.82/921,798.99 = 413,335.02/x - Step 3: Cross multiply
667,901.82x = 921,798.99 × 413,335.02 - Step 4: Simplify right side
667,901.82x = 381,011,803,967.63 - Step 5: Solve for x
x = 381,011,803,967.63/667,901.82 - Step 6: Final answer
x = 570,460.80
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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.