Finding the Fourth Proportional to 2,659,393,315.80, 3,989,089,973.70 and 1,208,205,091.80
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Solution
The fourth proportional to 2,659,393,315.80, 3,989,089,973.70 and 1,208,205,091.80 is: 1,812,307,637.70
Step by Step Solution
- Step 1: Write the proportion equation
2,659,393,315.80 : 3,989,089,973.70 = 1,208,205,091.80 : x - Step 2: Convert to fraction form
2,659,393,315.80/3,989,089,973.70 = 1,208,205,091.80/x - Step 3: Cross multiply
2,659,393,315.80x = 3,989,089,973.70 × 1,208,205,091.80 - Step 4: Simplify right side
2,659,393,315.80x = 4,819,638,817,872,667,648 - Step 5: Solve for x
x = 4,819,638,817,872,667,648/2,659,393,315.80 - Step 6: Final answer
x = 1,812,307,637.70
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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.