Finding the Fourth Proportional to 713,317.12, 1,070,079.36 and 380,711.68
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Solution
The fourth proportional to 713,317.12, 1,070,079.36 and 380,711.68 is: 571,122.86
Step by Step Solution
- Step 1: Write the proportion equation
713,317.12 : 1,070,079.36 = 380,711.68 : x - Step 2: Convert to fraction form
713,317.12/1,070,079.36 = 380,711.68/x - Step 3: Cross multiply
713,317.12x = 1,070,079.36 × 380,711.68 - Step 4: Simplify right side
713,317.12x = 407,391,710,878.93 - Step 5: Solve for x
x = 407,391,710,878.93/713,317.12 - Step 6: Final answer
x = 571,122.86
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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.