Finding the Fourth Proportional to 663,321.36, 915,384.36 and 361,515.36
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Solution
The fourth proportional to 663,321.36, 915,384.36 and 361,515.36 is: 498,891.68
Step by Step Solution
- Step 1: Write the proportion equation
663,321.36 : 915,384.36 = 361,515.36 : x - Step 2: Convert to fraction form
663,321.36/915,384.36 = 361,515.36/x - Step 3: Cross multiply
663,321.36x = 915,384.36 × 361,515.36 - Step 4: Simplify right side
663,321.36x = 330,925,506,443.77 - Step 5: Solve for x
x = 330,925,506,443.77/663,321.36 - Step 6: Final answer
x = 498,891.68
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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.