Finding the Fourth Proportional to 426,450,519.36, 639,675,871.20 and 153,821,263.68
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Solution
The fourth proportional to 426,450,519.36, 639,675,871.20 and 153,821,263.68 is: 230,731,928.76
Step by Step Solution
- Step 1: Write the proportion equation
426,450,519.36 : 639,675,871.20 = 153,821,263.68 : x - Step 2: Convert to fraction form
426,450,519.36/639,675,871.20 = 153,821,263.68/x - Step 3: Cross multiply
426,450,519.36x = 639,675,871.20 × 153,821,263.68 - Step 4: Simplify right side
426,450,519.36x = 98,395,750,853,588,928 - Step 5: Solve for x
x = 98,395,750,853,588,928/426,450,519.36 - Step 6: Final answer
x = 230,731,928.76
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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.