Home / 715,927.16-988,004.94-393,661.82

Finding the Fourth Proportional to 715,927.16, 988,004.94 and 393,661.82

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Solution

The fourth proportional to 715,927.16, 988,004.94 and 393,661.82 is: 543,267.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,927.16 : 988,004.94 = 393,661.82 : x
  2. Step 2: Convert to fraction form
    715,927.16/988,004.94 = 393,661.82/x
  3. Step 3: Cross multiply
    715,927.16x = 988,004.94 × 393,661.82
  4. Step 4: Simplify right side
    715,927.16x = 388,939,822,849.39
  5. Step 5: Solve for x
    x = 388,939,822,849.39/715,927.16
  6. Step 6: Final answer
    x = 543,267.31

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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.