Finding the Fourth Proportional to 864,828,211.80, 1,297,242,317.70 and 719,425,954.20
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Solution
The fourth proportional to 864,828,211.80, 1,297,242,317.70 and 719,425,954.20 is: 1,079,138,931.30
Step by Step Solution
- Step 1: Write the proportion equation
864,828,211.80 : 1,297,242,317.70 = 719,425,954.20 : x - Step 2: Convert to fraction form
864,828,211.80/1,297,242,317.70 = 719,425,954.20/x - Step 3: Cross multiply
864,828,211.80x = 1,297,242,317.70 × 719,425,954.20 - Step 4: Simplify right side
864,828,211.80x = 933,269,792,239,942,144 - Step 5: Solve for x
x = 933,269,792,239,942,144/864,828,211.80 - Step 6: Final answer
x = 1,079,138,931.30
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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.