Finding the Fourth Proportional to 814,217.70, 1,221,326.55 and 578,021.70
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Solution
The fourth proportional to 814,217.70, 1,221,326.55 and 578,021.70 is: 867,032.55
Step by Step Solution
- Step 1: Write the proportion equation
814,217.70 : 1,221,326.55 = 578,021.70 : x - Step 2: Convert to fraction form
814,217.70/1,221,326.55 = 578,021.70/x - Step 3: Cross multiply
814,217.70x = 1,221,326.55 × 578,021.70 - Step 4: Simplify right side
814,217.70x = 705,953,248,686.14 - Step 5: Solve for x
x = 705,953,248,686.14/814,217.70 - Step 6: Final answer
x = 867,032.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.