Finding the Fourth Proportional to 660,543.64, 911,555.58 and 358,739.80
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Solution
The fourth proportional to 660,543.64, 911,555.58 and 358,739.80 is: 495,063.83
Step by Step Solution
- Step 1: Write the proportion equation
660,543.64 : 911,555.58 = 358,739.80 : x - Step 2: Convert to fraction form
660,543.64/911,555.58 = 358,739.80/x - Step 3: Cross multiply
660,543.64x = 911,555.58 × 358,739.80 - Step 4: Simplify right side
660,543.64x = 327,011,266,458.08 - Step 5: Solve for x
x = 327,011,266,458.08/660,543.64 - Step 6: Final answer
x = 495,063.83
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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.