Finding the Fourth Proportional to 687,228.79, 948,427.68 and 381,363.07
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Solution
The fourth proportional to 687,228.79, 948,427.68 and 381,363.07 is: 526,309.87
Step by Step Solution
- Step 1: Write the proportion equation
687,228.79 : 948,427.68 = 381,363.07 : x - Step 2: Convert to fraction form
687,228.79/948,427.68 = 381,363.07/x - Step 3: Cross multiply
687,228.79x = 948,427.68 × 381,363.07 - Step 4: Simplify right side
687,228.79x = 361,695,291,717.78 - Step 5: Solve for x
x = 361,695,291,717.78/687,228.79 - Step 6: Final answer
x = 526,309.87
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1.5x scale
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.