Finding the Fourth Proportional to 5,280,389.80, 7,920,584.70 and 4,217,507.80
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Solution
The fourth proportional to 5,280,389.80, 7,920,584.70 and 4,217,507.80 is: 6,326,261.70
Step by Step Solution
- Step 1: Write the proportion equation
5,280,389.80 : 7,920,584.70 = 4,217,507.80 : x - Step 2: Convert to fraction form
5,280,389.80/7,920,584.70 = 4,217,507.80/x - Step 3: Cross multiply
5,280,389.80x = 7,920,584.70 × 4,217,507.80 - Step 4: Simplify right side
5,280,389.80x = 33,405,127,752,810.66 - Step 5: Solve for x
x = 33,405,127,752,810.66/5,280,389.80 - Step 6: Final answer
x = 6,326,261.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.