Finding the Fourth Proportional to 4,257,991.80, 6,386,987.70 and 1,266,175.80
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Solution
The fourth proportional to 4,257,991.80, 6,386,987.70 and 1,266,175.80 is: 1,899,263.70
Step by Step Solution
- Step 1: Write the proportion equation
4,257,991.80 : 6,386,987.70 = 1,266,175.80 : x - Step 2: Convert to fraction form
4,257,991.80/6,386,987.70 = 1,266,175.80/x - Step 3: Cross multiply
4,257,991.80x = 6,386,987.70 × 1,266,175.80 - Step 4: Simplify right side
4,257,991.80x = 8,087,049,260,637.66 - Step 5: Solve for x
x = 8,087,049,260,637.66/4,257,991.80 - Step 6: Final answer
x = 1,899,263.70
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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.