Finding the Fourth Proportional to 1,212,708,650.72, 1,819,208,195.06 and 372,241,304.96
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Solution
The fourth proportional to 1,212,708,650.72, 1,819,208,195.06 and 372,241,304.96 is: 558,406,532.45
Step by Step Solution
- Step 1: Write the proportion equation
1,212,708,650.72 : 1,819,208,195.06 = 372,241,304.96 : x - Step 2: Convert to fraction form
1,212,708,650.72/1,819,208,195.06 = 372,241,304.96/x - Step 3: Cross multiply
1,212,708,650.72x = 1,819,208,195.06 × 372,241,304.96 - Step 4: Simplify right side
1,212,708,650.72x = 677,184,432,512,103,424 - Step 5: Solve for x
x = 677,184,432,512,103,424/1,212,708,650.72 - Step 6: Final answer
x = 558,406,532.45
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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.