Finding the Fourth Proportional to 939,390,851.20, 1,409,086,276.80 and 794,272,028.80
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Solution
The fourth proportional to 939,390,851.20, 1,409,086,276.80 and 794,272,028.80 is: 1,191,408,043.20
Step by Step Solution
- Step 1: Write the proportion equation
939,390,851.20 : 1,409,086,276.80 = 794,272,028.80 : x - Step 2: Convert to fraction form
939,390,851.20/1,409,086,276.80 = 794,272,028.80/x - Step 3: Cross multiply
939,390,851.20x = 1,409,086,276.80 × 794,272,028.80 - Step 4: Simplify right side
939,390,851.20x = 1,119,197,815,828,174,208 - Step 5: Solve for x
x = 1,119,197,815,828,174,208/939,390,851.20 - Step 6: Final answer
x = 1,191,408,043.20
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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.