Finding the Fourth Proportional to 915,330.38, 1,263,155.85 and 507,431.18
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Solution
The fourth proportional to 915,330.38, 1,263,155.85 and 507,431.18 is: 700,254.99
Step by Step Solution
- Step 1: Write the proportion equation
915,330.38 : 1,263,155.85 = 507,431.18 : x - Step 2: Convert to fraction form
915,330.38/1,263,155.85 = 507,431.18/x - Step 3: Cross multiply
915,330.38x = 1,263,155.85 × 507,431.18 - Step 4: Simplify right side
915,330.38x = 640,964,666,647.29 - Step 5: Solve for x
x = 640,964,666,647.29/915,330.38 - Step 6: Final answer
x = 700,254.99
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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.