Finding the Fourth Proportional to 690,981.99, 1,036,423.06 and 217,802.79
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Solution
The fourth proportional to 690,981.99, 1,036,423.06 and 217,802.79 is: 326,688.45
Step by Step Solution
- Step 1: Write the proportion equation
690,981.99 : 1,036,423.06 = 217,802.79 : x - Step 2: Convert to fraction form
690,981.99/1,036,423.06 = 217,802.79/x - Step 3: Cross multiply
690,981.99x = 1,036,423.06 × 217,802.79 - Step 4: Simplify right side
690,981.99x = 225,735,834,088.34 - Step 5: Solve for x
x = 225,735,834,088.34/690,981.99 - Step 6: Final answer
x = 326,688.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.