Finding the Fourth Proportional to 554,423.38, 765,130.99 and 312,700.49
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Solution
The fourth proportional to 554,423.38, 765,130.99 and 312,700.49 is: 431,541.75
Step by Step Solution
- Step 1: Write the proportion equation
554,423.38 : 765,130.99 = 312,700.49 : x - Step 2: Convert to fraction form
554,423.38/765,130.99 = 312,700.49/x - Step 3: Cross multiply
554,423.38x = 765,130.99 × 312,700.49 - Step 4: Simplify right side
554,423.38x = 239,256,835,487.19 - Step 5: Solve for x
x = 239,256,835,487.19/554,423.38 - Step 6: Final answer
x = 431,541.75
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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.