Finding the Fourth Proportional to 2,155,202,415.70, 3,232,803,623.55 and 1,638,641,763.70
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Solution
The fourth proportional to 2,155,202,415.70, 3,232,803,623.55 and 1,638,641,763.70 is: 2,457,962,645.55
Step by Step Solution
- Step 1: Write the proportion equation
2,155,202,415.70 : 3,232,803,623.55 = 1,638,641,763.70 : x - Step 2: Convert to fraction form
2,155,202,415.70/3,232,803,623.55 = 1,638,641,763.70/x - Step 3: Cross multiply
2,155,202,415.70x = 3,232,803,623.55 × 1,638,641,763.70 - Step 4: Simplify right side
2,155,202,415.70x = 5,297,407,031,389,723,648 - Step 5: Solve for x
x = 5,297,407,031,389,723,648/2,155,202,415.70 - Step 6: Final answer
x = 2,457,962,645.55
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Double scale
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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.