Finding the Fourth Proportional to 1,238,600.63, 1,709,181.09 and 687,345.95
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Solution
The fourth proportional to 1,238,600.63, 1,709,181.09 and 687,345.95 is: 948,488.70
Step by Step Solution
- Step 1: Write the proportion equation
1,238,600.63 : 1,709,181.09 = 687,345.95 : x - Step 2: Convert to fraction form
1,238,600.63/1,709,181.09 = 687,345.95/x - Step 3: Cross multiply
1,238,600.63x = 1,709,181.09 × 687,345.95 - Step 4: Simplify right side
1,238,600.63x = 1,174,798,700,028.09 - Step 5: Solve for x
x = 1,174,798,700,028.09/1,238,600.63 - Step 6: Final answer
x = 948,488.70
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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.