Home / 783,415.27-1,080,715.08-511,642.18

Finding the Fourth Proportional to 783,415.27, 1,080,715.08 and 511,642.18

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Solution

The fourth proportional to 783,415.27, 1,080,715.08 and 511,642.18 is: 705,806.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,415.27 : 1,080,715.08 = 511,642.18 : x
  2. Step 2: Convert to fraction form
    783,415.27/1,080,715.08 = 511,642.18/x
  3. Step 3: Cross multiply
    783,415.27x = 1,080,715.08 × 511,642.18
  4. Step 4: Simplify right side
    783,415.27x = 552,939,419,490.07
  5. Step 5: Solve for x
    x = 552,939,419,490.07/783,415.27
  6. Step 6: Final answer
    x = 705,806.28

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Double scale
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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.