Finding the Fourth Proportional to 812,698.97, 1,122,278.46 and 608,395.20
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Solution
The fourth proportional to 812,698.97, 1,122,278.46 and 608,395.20 is: 840,149.74
Step by Step Solution
- Step 1: Write the proportion equation
812,698.97 : 1,122,278.46 = 608,395.20 : x - Step 2: Convert to fraction form
812,698.97/1,122,278.46 = 608,395.20/x - Step 3: Cross multiply
812,698.97x = 1,122,278.46 × 608,395.20 - Step 4: Simplify right side
812,698.97x = 682,788,828,127.39 - Step 5: Solve for x
x = 682,788,828,127.39/812,698.97 - Step 6: Final answer
x = 840,149.74
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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.