Finding the Fourth Proportional to 621,119,381.80, 931,679,072.70 and 477,792,149.80
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Solution
The fourth proportional to 621,119,381.80, 931,679,072.70 and 477,792,149.80 is: 716,688,224.70
Step by Step Solution
- Step 1: Write the proportion equation
621,119,381.80 : 931,679,072.70 = 477,792,149.80 : x - Step 2: Convert to fraction form
621,119,381.80/931,679,072.70 = 477,792,149.80/x - Step 3: Cross multiply
621,119,381.80x = 931,679,072.70 × 477,792,149.80 - Step 4: Simplify right side
621,119,381.80x = 445,148,947,069,003,520 - Step 5: Solve for x
x = 445,148,947,069,003,520/621,119,381.80 - Step 6: Final answer
x = 716,688,224.70
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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.