Finding the Fourth Proportional to 766,585,063.60, 1,149,877,595.40 and 421,405,313.20
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Solution
The fourth proportional to 766,585,063.60, 1,149,877,595.40 and 421,405,313.20 is: 632,107,969.80
Step by Step Solution
- Step 1: Write the proportion equation
766,585,063.60 : 1,149,877,595.40 = 421,405,313.20 : x - Step 2: Convert to fraction form
766,585,063.60/1,149,877,595.40 = 421,405,313.20/x - Step 3: Cross multiply
766,585,063.60x = 1,149,877,595.40 × 421,405,313.20 - Step 4: Simplify right side
766,585,063.60x = 484,564,528,231,199,936 - Step 5: Solve for x
x = 484,564,528,231,199,936/766,585,063.60 - Step 6: Final answer
x = 632,107,969.80
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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.