Finding the Fourth Proportional to 719,518.84, 992,920.22 and 392,820.70
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Solution
The fourth proportional to 719,518.84, 992,920.22 and 392,820.70 is: 542,083.95
Step by Step Solution
- Step 1: Write the proportion equation
719,518.84 : 992,920.22 = 392,820.70 : x - Step 2: Convert to fraction form
719,518.84/992,920.22 = 392,820.70/x - Step 3: Cross multiply
719,518.84x = 992,920.22 × 392,820.70 - Step 4: Simplify right side
719,518.84x = 390,039,615,864.55 - Step 5: Solve for x
x = 390,039,615,864.55/719,518.84 - Step 6: Final answer
x = 542,083.95
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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.