Finding the Fourth Proportional to 1,132,437.20, 1,698,655.80 and 778,542.80
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Solution
The fourth proportional to 1,132,437.20, 1,698,655.80 and 778,542.80 is: 1,167,814.20
Step by Step Solution
- Step 1: Write the proportion equation
1,132,437.20 : 1,698,655.80 = 778,542.80 : x - Step 2: Convert to fraction form
1,132,437.20/1,698,655.80 = 778,542.80/x - Step 3: Cross multiply
1,132,437.20x = 1,698,655.80 × 778,542.80 - Step 4: Simplify right side
1,132,437.20x = 1,322,476,242,768.24 - Step 5: Solve for x
x = 1,322,476,242,768.24/1,132,437.20 - Step 6: Final answer
x = 1,167,814.20
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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.