Finding the Fourth Proportional to 1,499,721.12, 2,069,615.28 and 820,657.68
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Solution
The fourth proportional to 1,499,721.12, 2,069,615.28 and 820,657.68 is: 1,132,507.67
Step by Step Solution
- Step 1: Write the proportion equation
1,499,721.12 : 2,069,615.28 = 820,657.68 : x - Step 2: Convert to fraction form
1,499,721.12/2,069,615.28 = 820,657.68/x - Step 3: Cross multiply
1,499,721.12x = 2,069,615.28 × 820,657.68 - Step 4: Simplify right side
1,499,721.12x = 1,698,445,674,177.35 - Step 5: Solve for x
x = 1,698,445,674,177.35/1,499,721.12 - Step 6: Final answer
x = 1,132,507.67
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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.