Finding the Fourth Proportional to 928,864.20, 1,280,860.96 and 687,652.68
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Solution
The fourth proportional to 928,864.20, 1,280,860.96 and 687,652.68 is: 948,241.38
Step by Step Solution
- Step 1: Write the proportion equation
928,864.20 : 1,280,860.96 = 687,652.68 : x - Step 2: Convert to fraction form
928,864.20/1,280,860.96 = 687,652.68/x - Step 3: Cross multiply
928,864.20x = 1,280,860.96 × 687,652.68 - Step 4: Simplify right side
928,864.20x = 880,787,471,851.37 - Step 5: Solve for x
x = 880,787,471,851.37/928,864.20 - Step 6: Final answer
x = 948,241.38
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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.