Finding the Fourth Proportional to 643,248.91, 887,102.62 and 401,553.91
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Solution
The fourth proportional to 643,248.91, 887,102.62 and 401,553.91 is: 553,781.78
Step by Step Solution
- Step 1: Write the proportion equation
643,248.91 : 887,102.62 = 401,553.91 : x - Step 2: Convert to fraction form
643,248.91/887,102.62 = 401,553.91/x - Step 3: Cross multiply
643,248.91x = 887,102.62 × 401,553.91 - Step 4: Simplify right side
643,248.91x = 356,219,525,632.24 - Step 5: Solve for x
x = 356,219,525,632.24/643,248.91 - Step 6: Final answer
x = 553,781.78
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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.