Finding the Fourth Proportional to 640,035,072.72, 883,243,698.12 and 361,571,536.08
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Solution
The fourth proportional to 640,035,072.72, 883,243,698.12 and 361,571,536.08 is: 498,966,063.38
Step by Step Solution
- Step 1: Write the proportion equation
640,035,072.72 : 883,243,698.12 = 361,571,536.08 : x - Step 2: Convert to fraction form
640,035,072.72/883,243,698.12 = 361,571,536.08/x - Step 3: Cross multiply
640,035,072.72x = 883,243,698.12 × 361,571,536.08 - Step 4: Simplify right side
640,035,072.72x = 319,355,780,662,228,224 - Step 5: Solve for x
x = 319,355,780,662,228,224/640,035,072.72 - Step 6: Final answer
x = 498,966,063.38
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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.