Finding the Fourth Proportional to 745,381.24, 1,028,638.56 and 423,101.23
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Solution
The fourth proportional to 745,381.24, 1,028,638.56 and 423,101.23 is: 583,886.76
Step by Step Solution
- Step 1: Write the proportion equation
745,381.24 : 1,028,638.56 = 423,101.23 : x - Step 2: Convert to fraction form
745,381.24/1,028,638.56 = 423,101.23/x - Step 3: Cross multiply
745,381.24x = 1,028,638.56 × 423,101.23 - Step 4: Simplify right side
745,381.24x = 435,218,239,961.43 - Step 5: Solve for x
x = 435,218,239,961.43/745,381.24 - Step 6: Final answer
x = 583,886.76
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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.