Finding the Fourth Proportional to 687,323.18, 948,511.28 and 381,400.76
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Solution
The fourth proportional to 687,323.18, 948,511.28 and 381,400.76 is: 526,335.99
Step by Step Solution
- Step 1: Write the proportion equation
687,323.18 : 948,511.28 = 381,400.76 : x - Step 2: Convert to fraction form
687,323.18/948,511.28 = 381,400.76/x - Step 3: Cross multiply
687,323.18x = 948,511.28 × 381,400.76 - Step 4: Simplify right side
687,323.18x = 361,762,923,060.57 - Step 5: Solve for x
x = 361,762,923,060.57/687,323.18 - Step 6: Final answer
x = 526,335.99
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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.