Finding the Fourth Proportional to 1,391,725.24, 1,920,548.20 and 818,802.28
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Solution
The fourth proportional to 1,391,725.24, 1,920,548.20 and 818,802.28 is: 1,129,927.95
Step by Step Solution
- Step 1: Write the proportion equation
1,391,725.24 : 1,920,548.20 = 818,802.28 : x - Step 2: Convert to fraction form
1,391,725.24/1,920,548.20 = 818,802.28/x - Step 3: Cross multiply
1,391,725.24x = 1,920,548.20 × 818,802.28 - Step 4: Simplify right side
1,391,725.24x = 1,572,549,245,009.90 - Step 5: Solve for x
x = 1,572,549,245,009.90/1,391,725.24 - Step 6: Final answer
x = 1,129,927.95
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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.