Finding the Fourth Proportional to 817,747.80, 1,226,621.70 and 765,259.80
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Solution
The fourth proportional to 817,747.80, 1,226,621.70 and 765,259.80 is: 1,147,889.70
Step by Step Solution
- Step 1: Write the proportion equation
817,747.80 : 1,226,621.70 = 765,259.80 : x - Step 2: Convert to fraction form
817,747.80/1,226,621.70 = 765,259.80/x - Step 3: Cross multiply
817,747.80x = 1,226,621.70 × 765,259.80 - Step 4: Simplify right side
817,747.80x = 938,684,276,817.66 - Step 5: Solve for x
x = 938,684,276,817.66/817,747.80 - Step 6: Final answer
x = 1,147,889.70
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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.