Finding the Fourth Proportional to 338,428,271.80, 507,642,407.70 and 83,126,639.80
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Solution
The fourth proportional to 338,428,271.80, 507,642,407.70 and 83,126,639.80 is: 124,689,959.70
Step by Step Solution
- Step 1: Write the proportion equation
338,428,271.80 : 507,642,407.70 = 83,126,639.80 : x - Step 2: Convert to fraction form
338,428,271.80/507,642,407.70 = 83,126,639.80/x - Step 3: Cross multiply
338,428,271.80x = 507,642,407.70 × 83,126,639.80 - Step 4: Simplify right side
338,428,271.80x = 42,198,607,572,082,640 - Step 5: Solve for x
x = 42,198,607,572,082,640/338,428,271.80 - Step 6: Final answer
x = 124,689,959.70
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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.