Finding the Fourth Proportional to 1,121,128.04, 1,547,156.27 and 611,830.42
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Solution
The fourth proportional to 1,121,128.04, 1,547,156.27 and 611,830.42 is: 844,325.75
Step by Step Solution
- Step 1: Write the proportion equation
1,121,128.04 : 1,547,156.27 = 611,830.42 : x - Step 2: Convert to fraction form
1,121,128.04/1,547,156.27 = 611,830.42/x - Step 3: Cross multiply
1,121,128.04x = 1,547,156.27 × 611,830.42 - Step 4: Simplify right side
1,121,128.04x = 946,597,270,479.73 - Step 5: Solve for x
x = 946,597,270,479.73/1,121,128.04 - Step 6: Final answer
x = 844,325.75
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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.