Finding the Fourth Proportional to 886,464,372.60, 1,329,696,558.90 and 860,955,204.60
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Solution
The fourth proportional to 886,464,372.60, 1,329,696,558.90 and 860,955,204.60 is: 1,291,432,806.90
Step by Step Solution
- Step 1: Write the proportion equation
886,464,372.60 : 1,329,696,558.90 = 860,955,204.60 : x - Step 2: Convert to fraction form
886,464,372.60/1,329,696,558.90 = 860,955,204.60/x - Step 3: Cross multiply
886,464,372.60x = 1,329,696,558.90 × 860,955,204.60 - Step 4: Simplify right side
886,464,372.60x = 1,144,809,172,923,665,536 - Step 5: Solve for x
x = 1,144,809,172,923,665,536/886,464,372.60 - Step 6: Final answer
x = 1,291,432,806.90
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Double scale
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Similar ratio
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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.