Finding the Fourth Proportional to 1,257,331,259.42, 1,735,038,958.05 and 692,784,548.41
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Solution
The fourth proportional to 1,257,331,259.42, 1,735,038,958.05 and 692,784,548.41 is: 955,999,599.97
Step by Step Solution
- Step 1: Write the proportion equation
1,257,331,259.42 : 1,735,038,958.05 = 692,784,548.41 : x - Step 2: Convert to fraction form
1,257,331,259.42/1,735,038,958.05 = 692,784,548.41/x - Step 3: Cross multiply
1,257,331,259.42x = 1,735,038,958.05 × 692,784,548.41 - Step 4: Simplify right side
1,257,331,259.42x = 1,202,008,181,031,200,512 - Step 5: Solve for x
x = 1,202,008,181,031,200,512/1,257,331,259.42 - Step 6: Final answer
x = 955,999,599.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.