Finding the Fourth Proportional to 513,966.14, 709,281.68 and 281,389.20
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Solution
The fourth proportional to 513,966.14, 709,281.68 and 281,389.20 is: 388,321.70
Step by Step Solution
- Step 1: Write the proportion equation
513,966.14 : 709,281.68 = 281,389.20 : x - Step 2: Convert to fraction form
513,966.14/709,281.68 = 281,389.20/x - Step 3: Cross multiply
513,966.14x = 709,281.68 × 281,389.20 - Step 4: Simplify right side
513,966.14x = 199,584,204,509.86 - Step 5: Solve for x
x = 199,584,204,509.86/513,966.14 - Step 6: Final answer
x = 388,321.70
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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.