Finding the Fourth Proportional to 886,465,938.40, 1,329,698,907.60 and 838,848,824.80
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Solution
The fourth proportional to 886,465,938.40, 1,329,698,907.60 and 838,848,824.80 is: 1,258,273,237.20
Step by Step Solution
- Step 1: Write the proportion equation
886,465,938.40 : 1,329,698,907.60 = 838,848,824.80 : x - Step 2: Convert to fraction form
886,465,938.40/1,329,698,907.60 = 838,848,824.80/x - Step 3: Cross multiply
886,465,938.40x = 1,329,698,907.60 × 838,848,824.80 - Step 4: Simplify right side
886,465,938.40x = 1,115,416,365,978,103,680 - Step 5: Solve for x
x = 1,115,416,365,978,103,680/886,465,938.40 - Step 6: Final answer
x = 1,258,273,237.20
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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.