Finding the Fourth Proportional to 864,833,178.80, 1,297,249,768.20 and 719,430,921.20
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Solution
The fourth proportional to 864,833,178.80, 1,297,249,768.20 and 719,430,921.20 is: 1,079,146,381.80
Step by Step Solution
- Step 1: Write the proportion equation
864,833,178.80 : 1,297,249,768.20 = 719,430,921.20 : x - Step 2: Convert to fraction form
864,833,178.80/1,297,249,768.20 = 719,430,921.20/x - Step 3: Cross multiply
864,833,178.80x = 1,297,249,768.20 × 719,430,921.20 - Step 4: Simplify right side
864,833,178.80x = 933,281,595,762,612,608 - Step 5: Solve for x
x = 933,281,595,762,612,608/864,833,178.80 - Step 6: Final answer
x = 1,079,146,381.80
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Similar ratio
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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.