Finding the Fourth Proportional to 687,736.40, 1,031,750.40 and 207,924.80
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Solution
The fourth proportional to 687,736.40, 1,031,750.40 and 207,924.80 is: 311,931.28
Step by Step Solution
- Step 1: Write the proportion equation
687,736.40 : 1,031,750.40 = 207,924.80 : x - Step 2: Convert to fraction form
687,736.40/1,031,750.40 = 207,924.80/x - Step 3: Cross multiply
687,736.40x = 1,031,750.40 × 207,924.80 - Step 4: Simplify right side
687,736.40x = 214,526,495,569.92 - Step 5: Solve for x
x = 214,526,495,569.92/687,736.40 - Step 6: Final answer
x = 311,931.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.