Finding the Fourth Proportional to 785,431.70, 1,083,900.93 and 445,905.62
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Solution
The fourth proportional to 785,431.70, 1,083,900.93 and 445,905.62 is: 615,352.70
Step by Step Solution
- Step 1: Write the proportion equation
785,431.70 : 1,083,900.93 = 445,905.62 : x - Step 2: Convert to fraction form
785,431.70/1,083,900.93 = 445,905.62/x - Step 3: Cross multiply
785,431.70x = 1,083,900.93 × 445,905.62 - Step 4: Simplify right side
785,431.70x = 483,317,516,210.23 - Step 5: Solve for x
x = 483,317,516,210.23/785,431.70 - Step 6: Final answer
x = 615,352.70
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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.