Finding the Fourth Proportional to 678,348.36, 935,931.06 and 423,957.96
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Solution
The fourth proportional to 678,348.36, 935,931.06 and 423,957.96 is: 584,943.44
Step by Step Solution
- Step 1: Write the proportion equation
678,348.36 : 935,931.06 = 423,957.96 : x - Step 2: Convert to fraction form
678,348.36/935,931.06 = 423,957.96/x - Step 3: Cross multiply
678,348.36x = 935,931.06 × 423,957.96 - Step 4: Simplify right side
678,348.36x = 396,795,422,898.24 - Step 5: Solve for x
x = 396,795,422,898.24/678,348.36 - Step 6: Final answer
x = 584,943.44
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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.