Finding the Fourth Proportional to 1,130,780.70, 1,560,459.26 and 621,472.14
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Solution
The fourth proportional to 1,130,780.70, 1,560,459.26 and 621,472.14 is: 857,621.60
Step by Step Solution
- Step 1: Write the proportion equation
1,130,780.70 : 1,560,459.26 = 621,472.14 : x - Step 2: Convert to fraction form
1,130,780.70/1,560,459.26 = 621,472.14/x - Step 3: Cross multiply
1,130,780.70x = 1,560,459.26 × 621,472.14 - Step 4: Simplify right side
1,130,780.70x = 969,781,952,587.66 - Step 5: Solve for x
x = 969,781,952,587.66/1,130,780.70 - Step 6: Final answer
x = 857,621.60
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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.