Finding the Fourth Proportional to 553,225.68, 763,412.04 and 311,521.68
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Solution
The fourth proportional to 553,225.68, 763,412.04 and 311,521.68 is: 429,877.73
Step by Step Solution
- Step 1: Write the proportion equation
553,225.68 : 763,412.04 = 311,521.68 : x - Step 2: Convert to fraction form
553,225.68/763,412.04 = 311,521.68/x - Step 3: Cross multiply
553,225.68x = 763,412.04 × 311,521.68 - Step 4: Simplify right side
553,225.68x = 237,819,401,233.03 - Step 5: Solve for x
x = 237,819,401,233.03/553,225.68 - Step 6: Final answer
x = 429,877.73
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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.