Finding the Fourth Proportional to 1,021,529.36, 1,409,035.55 and 638,891.84
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Solution
The fourth proportional to 1,021,529.36, 1,409,035.55 and 638,891.84 is: 881,248.59
Step by Step Solution
- Step 1: Write the proportion equation
1,021,529.36 : 1,409,035.55 = 638,891.84 : x - Step 2: Convert to fraction form
1,021,529.36/1,409,035.55 = 638,891.84/x - Step 3: Cross multiply
1,021,529.36x = 1,409,035.55 × 638,891.84 - Step 4: Simplify right side
1,021,529.36x = 900,221,304,925.28 - Step 5: Solve for x
x = 900,221,304,925.28/1,021,529.36 - Step 6: Final answer
x = 881,248.59
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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.