Finding the Fourth Proportional to 747,811.17, 1,031,974.12 and 408,279.42
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Solution
The fourth proportional to 747,811.17, 1,031,974.12 and 408,279.42 is: 563,422.71
Step by Step Solution
- Step 1: Write the proportion equation
747,811.17 : 1,031,974.12 = 408,279.42 : x - Step 2: Convert to fraction form
747,811.17/1,031,974.12 = 408,279.42/x - Step 3: Cross multiply
747,811.17x = 1,031,974.12 × 408,279.42 - Step 4: Simplify right side
747,811.17x = 421,333,795,678.96 - Step 5: Solve for x
x = 421,333,795,678.96/747,811.17 - Step 6: Final answer
x = 563,422.71
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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.