Finding the Fourth Proportional to 522,988,555.97, 721,775,185.29 and 390,599,710.79
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Solution
The fourth proportional to 522,988,555.97, 721,775,185.29 and 390,599,710.79 is: 539,065,674.39
Step by Step Solution
- Step 1: Write the proportion equation
522,988,555.97 : 721,775,185.29 = 390,599,710.79 : x - Step 2: Convert to fraction form
522,988,555.97/721,775,185.29 = 390,599,710.79/x - Step 3: Cross multiply
522,988,555.97x = 721,775,185.29 × 390,599,710.79 - Step 4: Simplify right side
522,988,555.97x = 281,925,178,626,063,776 - Step 5: Solve for x
x = 281,925,178,626,063,776/522,988,555.97 - Step 6: Final answer
x = 539,065,674.39
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1.5x scale
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.