Finding the Fourth Proportional to 689,769.84, 951,868.28 and 431,789.07
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Solution
The fourth proportional to 689,769.84, 951,868.28 and 431,789.07 is: 595,860.09
Step by Step Solution
- Step 1: Write the proportion equation
689,769.84 : 951,868.28 = 431,789.07 : x - Step 2: Convert to fraction form
689,769.84/951,868.28 = 431,789.07/x - Step 3: Cross multiply
689,769.84x = 951,868.28 × 431,789.07 - Step 4: Simplify right side
689,769.84x = 411,006,320,463.17 - Step 5: Solve for x
x = 411,006,320,463.17/689,769.84 - Step 6: Final answer
x = 595,860.09
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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.