Finding the Fourth Proportional to 1,107,218,195.60, 1,660,827,293.40 and 646,919,430.80
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Solution
The fourth proportional to 1,107,218,195.60, 1,660,827,293.40 and 646,919,430.80 is: 970,379,146.20
Step by Step Solution
- Step 1: Write the proportion equation
1,107,218,195.60 : 1,660,827,293.40 = 646,919,430.80 : x - Step 2: Convert to fraction form
1,107,218,195.60/1,660,827,293.40 = 646,919,430.80/x - Step 3: Cross multiply
1,107,218,195.60x = 1,660,827,293.40 × 646,919,430.80 - Step 4: Simplify right side
1,107,218,195.60x = 1,074,421,447,303,432,576 - Step 5: Solve for x
x = 1,074,421,447,303,432,576/1,107,218,195.60 - Step 6: Final answer
x = 970,379,146.20
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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.