Finding the Fourth Proportional to 553,151.99, 763,364.00 and 311,443.08
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Solution
The fourth proportional to 553,151.99, 763,364.00 and 311,443.08 is: 429,799.47
Step by Step Solution
- Step 1: Write the proportion equation
553,151.99 : 763,364.00 = 311,443.08 : x - Step 2: Convert to fraction form
553,151.99/763,364.00 = 311,443.08/x - Step 3: Cross multiply
553,151.99x = 763,364.00 × 311,443.08 - Step 4: Simplify right side
553,151.99x = 237,744,431,485.25 - Step 5: Solve for x
x = 237,744,431,485.25/553,151.99 - Step 6: Final answer
x = 429,799.47
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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.