Finding the Fourth Proportional to 1,267,392.99, 1,748,990.91 and 686,602.80
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Solution
The fourth proportional to 1,267,392.99, 1,748,990.91 and 686,602.80 is: 947,505.68
Step by Step Solution
- Step 1: Write the proportion equation
1,267,392.99 : 1,748,990.91 = 686,602.80 : x - Step 2: Convert to fraction form
1,267,392.99/1,748,990.91 = 686,602.80/x - Step 3: Cross multiply
1,267,392.99x = 1,748,990.91 × 686,602.80 - Step 4: Simplify right side
1,267,392.99x = 1,200,862,055,980.55 - Step 5: Solve for x
x = 1,200,862,055,980.55/1,267,392.99 - Step 6: Final answer
x = 947,505.68
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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.