Finding the Fourth Proportional to 608,414.36, 839,724.12 and 390,894.94
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Solution
The fourth proportional to 608,414.36, 839,724.12 and 390,894.94 is: 539,507.17
Step by Step Solution
- Step 1: Write the proportion equation
608,414.36 : 839,724.12 = 390,894.94 : x - Step 2: Convert to fraction form
608,414.36/839,724.12 = 390,894.94/x - Step 3: Cross multiply
608,414.36x = 839,724.12 × 390,894.94 - Step 4: Simplify right side
608,414.36x = 328,243,909,503.95 - Step 5: Solve for x
x = 328,243,909,503.95/608,414.36 - Step 6: Final answer
x = 539,507.17
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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.