Finding the Fourth Proportional to 1,126,574.28, 1,554,817.14 and 643,028.58
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Solution
The fourth proportional to 1,126,574.28, 1,554,817.14 and 643,028.58 is: 887,461.99
Step by Step Solution
- Step 1: Write the proportion equation
1,126,574.28 : 1,554,817.14 = 643,028.58 : x - Step 2: Convert to fraction form
1,126,574.28/1,554,817.14 = 643,028.58/x - Step 3: Cross multiply
1,126,574.28x = 1,554,817.14 × 643,028.58 - Step 4: Simplify right side
1,126,574.28x = 999,791,857,693.86 - Step 5: Solve for x
x = 999,791,857,693.86/1,126,574.28 - Step 6: Final answer
x = 887,461.99
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1.5x scale
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.