Finding the Fourth Proportional to 696,379.14, 961,042.88 and 390,440.74
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Solution
The fourth proportional to 696,379.14, 961,042.88 and 390,440.74 is: 538,830.46
Step by Step Solution
- Step 1: Write the proportion equation
696,379.14 : 961,042.88 = 390,440.74 : x - Step 2: Convert to fraction form
696,379.14/961,042.88 = 390,440.74/x - Step 3: Cross multiply
696,379.14x = 961,042.88 × 390,440.74 - Step 4: Simplify right side
696,379.14x = 375,230,293,238.93 - Step 5: Solve for x
x = 375,230,293,238.93/696,379.14 - Step 6: Final answer
x = 538,830.46
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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.