Finding the Fourth Proportional to 814,574.80, 1,221,862.20 and 761,430.70
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Solution
The fourth proportional to 814,574.80, 1,221,862.20 and 761,430.70 is: 1,142,146.05
Step by Step Solution
- Step 1: Write the proportion equation
814,574.80 : 1,221,862.20 = 761,430.70 : x - Step 2: Convert to fraction form
814,574.80/1,221,862.20 = 761,430.70/x - Step 3: Cross multiply
814,574.80x = 1,221,862.20 × 761,430.70 - Step 4: Simplify right side
814,574.80x = 930,363,390,249.54 - Step 5: Solve for x
x = 930,363,390,249.54/814,574.80 - Step 6: Final answer
x = 1,142,146.05
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.