Finding the Fourth Proportional to 521,902,865.60, 720,228,801.81 and 307,330,871.84
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Solution
The fourth proportional to 521,902,865.60, 720,228,801.81 and 307,330,871.84 is: 424,118,279.80
Step by Step Solution
- Step 1: Write the proportion equation
521,902,865.60 : 720,228,801.81 = 307,330,871.84 : x - Step 2: Convert to fraction form
521,902,865.60/720,228,801.81 = 307,330,871.84/x - Step 3: Cross multiply
521,902,865.60x = 720,228,801.81 × 307,330,871.84 - Step 4: Simplify right side
521,902,865.60x = 221,348,545,579,792,224 - Step 5: Solve for x
x = 221,348,545,579,792,224/521,902,865.60 - Step 6: Final answer
x = 424,118,279.80
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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.