Finding the Fourth Proportional to 766,483,668.80, 1,149,725,503.20 and 421,259,595.20
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Solution
The fourth proportional to 766,483,668.80, 1,149,725,503.20 and 421,259,595.20 is: 631,889,392.80
Step by Step Solution
- Step 1: Write the proportion equation
766,483,668.80 : 1,149,725,503.20 = 421,259,595.20 : x - Step 2: Convert to fraction form
766,483,668.80/1,149,725,503.20 = 421,259,595.20/x - Step 3: Cross multiply
766,483,668.80x = 1,149,725,503.20 × 421,259,595.20 - Step 4: Simplify right side
766,483,668.80x = 484,332,900,069,148,288 - Step 5: Solve for x
x = 484,332,900,069,148,288/766,483,668.80 - Step 6: Final answer
x = 631,889,392.80
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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.