Finding the Fourth Proportional to 557,036.16, 768,628.80 and 318,526.08
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Solution
The fourth proportional to 557,036.16, 768,628.80 and 318,526.08 is: 439,519.62
Step by Step Solution
- Step 1: Write the proportion equation
557,036.16 : 768,628.80 = 318,526.08 : x - Step 2: Convert to fraction form
557,036.16/768,628.80 = 318,526.08/x - Step 3: Cross multiply
557,036.16x = 768,628.80 × 318,526.08 - Step 4: Simplify right side
557,036.16x = 244,828,318,639.10 - Step 5: Solve for x
x = 244,828,318,639.10/557,036.16 - Step 6: Final answer
x = 439,519.62
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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.