Finding the Fourth Proportional to 1,265,544,121.20, 1,898,316,181.80 and 538,438,354.80
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Solution
The fourth proportional to 1,265,544,121.20, 1,898,316,181.80 and 538,438,354.80 is: 807,657,532.20
Step by Step Solution
- Step 1: Write the proportion equation
1,265,544,121.20 : 1,898,316,181.80 = 538,438,354.80 : x - Step 2: Convert to fraction form
1,265,544,121.20/1,898,316,181.80 = 538,438,354.80/x - Step 3: Cross multiply
1,265,544,121.20x = 1,898,316,181.80 × 538,438,354.80 - Step 4: Simplify right side
1,265,544,121.20x = 1,022,126,241,818,609,536 - Step 5: Solve for x
x = 1,022,126,241,818,609,536/1,265,544,121.20 - Step 6: Final answer
x = 807,657,532.20
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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.