Finding the Fourth Proportional to 1,139,479.74, 1,572,418.44 and 623,131.74
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Solution
The fourth proportional to 1,139,479.74, 1,572,418.44 and 623,131.74 is: 859,887.02
Step by Step Solution
- Step 1: Write the proportion equation
1,139,479.74 : 1,572,418.44 = 623,131.74 : x - Step 2: Convert to fraction form
1,139,479.74/1,572,418.44 = 623,131.74/x - Step 3: Cross multiply
1,139,479.74x = 1,572,418.44 × 623,131.74 - Step 4: Simplify right side
1,139,479.74x = 979,823,838,525.29 - Step 5: Solve for x
x = 979,823,838,525.29/1,139,479.74 - Step 6: Final answer
x = 859,887.02
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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.