Finding the Fourth Proportional to 1,350,572,162.20, 1,863,985,325.51 and 778,243,867.70
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Solution
The fourth proportional to 1,350,572,162.20, 1,863,985,325.51 and 778,243,867.70 is: 1,074,089,330.18
Step by Step Solution
- Step 1: Write the proportion equation
1,350,572,162.20 : 1,863,985,325.51 = 778,243,867.70 : x - Step 2: Convert to fraction form
1,350,572,162.20/1,863,985,325.51 = 778,243,867.70/x - Step 3: Cross multiply
1,350,572,162.20x = 1,863,985,325.51 × 778,243,867.70 - Step 4: Simplify right side
1,350,572,162.20x = 1,450,635,149,047,735,040 - Step 5: Solve for x
x = 1,450,635,149,047,735,040/1,350,572,162.20 - Step 6: Final answer
x = 1,074,089,330.18
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.