Finding the Fourth Proportional to 814,286,938.73, 1,220,872,795.64 and 414,671,968.31
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Solution
The fourth proportional to 814,286,938.73, 1,220,872,795.64 and 414,671,968.31 is: 621,723,990.82
Step by Step Solution
- Step 1: Write the proportion equation
814,286,938.73 : 1,220,872,795.64 = 414,671,968.31 : x - Step 2: Convert to fraction form
814,286,938.73/1,220,872,795.64 = 414,671,968.31/x - Step 3: Cross multiply
814,286,938.73x = 1,220,872,795.64 × 414,671,968.31 - Step 4: Simplify right side
814,286,938.73x = 506,261,725,225,150,016 - Step 5: Solve for x
x = 506,261,725,225,150,016/814,286,938.73 - Step 6: Final answer
x = 621,723,990.82
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1.5x scale
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.